The number 15025
15025 is a composite number with 6 divisors. Its prime factorisation is Ć 601. Divisors (6): 1, 5, 25, 601, 3005, 15025.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
15025 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
15025 is composite. Its prime factorisation is
- 3
The divisors add up to 18662; without 15025 itself that is 3637, so 15025 is deficient (3637 is less than 15025). Euler's totient Ļ(15025) = 12000 numbers up to 15025 share no factor with it.
- 4
The digits of 15025 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 89 steps to reach 1.
LaTeX source of the formulas on this page
\[ 15025 = 5^{2} \times 601 \]15025 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 18662 |
| Euler totient Ļ(n) | 12000 |
| Square | 225750625 |
| Cube | 3391903140625 |
| Square root | 122.576507 (= 5ā601) |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 89 |
| Scientific notation | 1.5025 Ć |
15025 in other forms
| Form | Value |
|---|---|
| In words | fifteen thousand and twenty-five |
| Binary (base 2) | 11101010110001 |
| Octal (base 8) | 35261 |
| Hexadecimal (base 16) | 3AB1 |
| Base 3 | 202121111 |
| As time | 15025 seconds = 4 h 10 min 25 s |
Is 15025 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 1) | 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 (15025 Ć· 5 = 3005) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | 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 4) | 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 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 15025 a prime number?
No. 15025 = Ć 601, so it is divisible by 5.
What are the factors of 15025?
1, 5, 25, 601, 3005, 15025.
What is 15025 in binary?
11101010110001 (hexadecimal 3AB1, octal 35261).
What is the square root of 15025?
About 122.5765, exactly 5ā601.
Is 15025 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 15025?
It is a composite number with 6 divisors.