21725

21,725 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21725 look like?

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

21725 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 21725:

5² × 11 × 79

(5 × 5 × 11 × 79)

See below for interesting mathematical facts about the number 21725 from the Numbermatics database.

Names of 21725

Cardinal: 21725 can be written as Twenty-one thousand, seven hundred twenty-five.

Scientific notation

Scientific notation: 2.1725 × 10⁴

Factors of 21725

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 95

Divisors of 21725

Number of divisors d(n): 12
Complete list of divisors:
1 5 11 25 55 79 275 395 869 1975 4345 21725
Sum of all divisors σ(n): 29760
Sum of proper divisors (its aliquot sum) s(n): 8035
21725 is a deficient number, because the sum of its proper divisors (8035) is less than itself. Its deficiency is 13690

Bases of 21725

Binary: 101010011011101₂
Hexadecimal: 0x54DD
Base-36: GRH

Squares and roots of 21725

21725 squared (21725²) is 471975625
21725 cubed (21725³) is 10253670453125
The square root of 21725 is 147.3940297299
The cube root of 21725 is 27.9031517959

Scales and comparisons

How big is 21725?

21,725 seconds is equal to 6 hours, 2 minutes, 5 seconds.
To count from 1 to 21,725 would take you about six 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 21725 cubic inches would be around 2.3 feet tall.

Recreational maths with 21725

21725 backwards is 52712
The number of decimal digits it has is: 5
The sum of 21725's digits is 17
More coming soon!

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The information we have on file for 21725 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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