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:
1 5 7 25 35 175 463 2315 3241 11575 16205 81025
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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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!

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