The number 64025
64025 is a composite number with 12 divisors. Its prime factorisation is × 13 × 197. Divisors (12): 1, 5, 13, 25, 65, 197, 325, 985, 2561, 4925, 12805, 64025.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
64025 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
64025 is composite. Its prime factorisation is
- 3
The divisors add up to 85932; without 64025 itself that is 21907, so 64025 is deficient (21907 is less than 64025). Euler's totient φ(64025) = 47040 numbers up to 64025 share no factor with it.
- 4
The digits of 64025 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 86 steps to reach 1.
LaTeX source of the formulas on this page
\[ 64025 = 5^{2} \times 13 \times 197 \]64025 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 85932 |
| Euler totient φ(n) | 47040 |
| Square | 4099200625 |
| Cube | 262451320015625 |
| Square root | 253.031619 (= 5√2561) |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 86 |
| Scientific notation | 6.4025 × |
64025 in other forms
| Form | Value |
|---|---|
| In words | sixty-four thousand and twenty-five |
| Binary (base 2) | 1111101000011001 |
| Octal (base 8) | 175031 |
| Hexadecimal (base 16) | FA19 |
| Base 3 | 10020211022 |
| As time | 64025 seconds = 17 h 47 min 5 s |
Is 64025 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (64025 ÷ 5 = 12805) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 64025 a prime number?
No. 64025 = × 13 × 197, so it is divisible by 5.
What are the factors of 64025?
1, 5, 13, 25, 65, 197, 325, 985, 2561, 4925, 12805, 64025.
What is 64025 in binary?
1111101000011001 (hexadecimal FA19, octal 175031).
What is the square root of 64025?
About 253.0316, exactly 5√2561.
Is 64025 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 64025?
It is a composite number with 12 divisors.