21025
Number 21025: Properties, Factors, and Mathematical Facts
Short answer
The number 21025 is an odd composite number with 9 positive divisors. Its prime factorization is 5² × 29². It is also a deficient number and a perfect square, which gives it several notable mathematical relationships.
Is 21025 prime?
ClassificationCompositeParityOddDivisor count9AbundanceDeficient
What is the prime factorization of 21025?
Prime factorization
5 squared times 29 squared
What are the divisors of 21025?
Divisor count
9
Divisor sum
27,001
Proper divisor sum
5,976
- 1
- 5
- 25
- 29
- 145
- 725
- 841
- 4205
- 21025
How is 21025 classified?
Prime
CompositeLearn more →
Perfect square
YesLearn more →
Perfect cube
No
Fibonacci
No
Triangular
No
Power of two
No
How is 21025 represented in other numeral systems?
Decimal
21025
Binary
101001000100001
Octal
51041
Hexadecimal
5221
Roman
No conventional Roman numeral
In words
twenty one thousand twenty five
Roots and powers
Square root
145 Exact
Cube root
27.600186 Approximate
Nearest lower square
21025
Nearest higher square
21316
Nearest lower cube
19683
Nearest higher cube
21952
What are the digit properties of 21025?
Which numbers are related to 21025?
Why these results are true
- 21025 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 21025
- Is 21025 prime?
- No
- What is the prime factorization of 21025?
- 5² × 29²
- Is 21025 a perfect square?
- Yes
- What is 21025 in binary?
- 101001000100001