81025

81,025 is an odd composite number composed of three prime numbers multiplied together.

What does the number 81025 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

81025 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 81025:

52 × 7 × 463

(5 × 5 × 7 × 463)

See below for interesting mathematical facts about the number 81025 from the Numbermatics database.


Names of 81025

  • Cardinal: 81025 can be written as Eighty-one thousand and twenty-five.

Scientific notation

  • Scientific notation: 8.1025 × 104

Factors of 81025

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 475

Divisors of 81025

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 115072
  • Sum of proper divisors (its aliquot sum) s(n): 34047
  • 81025 is a deficient number, because the sum of its proper divisors (34047) is less than itself. Its deficiency is 46978

Bases of 81025

  • Binary: 100111100100000012
  • Hexadecimal: 0x13C81
  • Base-36: 1QIP

Squares and roots of 81025

  • 81025 squared (810252) is 6565050625
  • 81025 cubed (810253) is 531933226890625
  • The square root of 81025 is 284.6489065499
  • The cube root of 81025 is 43.2719380389

Scales and comparisons

How big is 81025?
  • 81,025 seconds is equal to 22 hours, 30 minutes, 25 seconds.
  • To count from 1 to 81,025 would take you about twenty-two hours.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 81025 cubic inches would be around 3.6 feet tall.

Recreational maths with 81025

  • 81025 backwards is 52018
  • The number of decimal digits it has is: 5
  • The sum of 81025's digits is 16
  • More coming soon!

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"Number 81025 - Facts about the integer". Numbermatics.com. 2022. Web. 30 November 2022.

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Numbermatics. (2022). Number 81025 - Facts about the integer. Retrieved 30 November 2022, from https://numbermatics.com/n/81025/

Chicago style:
Numbermatics. 2022. "Number 81025 - Facts about the integer". https://numbermatics.com/n/81025/

The information we have on file for 81025 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

Keywords: Divisors of 81025, math, Factors of 81025, curriculum, school, college, exams, university, Prime factorization of 81025, STEM, science, technology, engineering, physics, economics, calculator, eighty-one thousand and twenty-five.

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