The number 25375
25375 is a composite number with 16 divisors. Its prime factorisation is × 7 × 29. Divisors (16): 1, 5, 7, 25, 29, 35, 125, 145, 175, 203, 725, 875, 1015, 3625, 5075, 25375.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25375 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25375 is composite. Its prime factorisation is
- 3
The divisors add up to 37440; without 25375 itself that is 12065, so 25375 is deficient (12065 is less than 25375). Euler's totient φ(25375) = 16800 numbers up to 25375 share no factor with it.
- 4
The digits of 25375 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 64 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25375 = 5^{3} \times 7 \times 29 \]25375 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 37440 |
| Euler totient φ(n) | 16800 |
| Square | 643890625 |
| Cube | 16338724609375 |
| Square root | 159.295323 (= 5√1015) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.5375 × |
25375 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand three hundred and seventy-five |
| Binary (base 2) | 110001100011111 |
| Octal (base 8) | 61437 |
| Hexadecimal (base 16) | 631F |
| Base 3 | 1021210211 |
| As time | 25375 seconds = 7 h 2 min 55 s |
Is 25375 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (25375 ÷ 5 = 5075) | 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 | Yes (25375 ÷ 7 = 3625) | 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 7) | 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 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25375 a prime number?
No. 25375 = × 7 × 29, so it is divisible by 5.
What are the factors of 25375?
1, 5, 7, 25, 29, 35, 125, 145, 175, 203, 725, 875, 1015, 3625, 5075, 25375.
What is 25375 in binary?
110001100011111 (hexadecimal 631F, octal 61437).
What is the square root of 25375?
About 159.2953, exactly 5√1015.
Is 25375 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 25375?
It is a composite number with 16 divisors.