The number 12925
12925 is a composite number with 12 divisors. Its prime factorisation is × 11 × 47. Divisors (12): 1, 5, 11, 25, 47, 55, 235, 275, 517, 1175, 2585, 12925.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
12925 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
12925 is composite. Its prime factorisation is
- 3
The divisors add up to 17856; without 12925 itself that is 4931, so 12925 is deficient (4931 is less than 12925). Euler's totient φ(12925) = 9200 numbers up to 12925 share no factor with it.
- 4
The digits of 12925 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 169 steps to reach 1.
LaTeX source of the formulas on this page
\[ 12925 = 5^{2} \times 11 \times 47 \]12925 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 17856 |
| Euler totient φ(n) | 9200 |
| Square | 167055625 |
| Cube | 2159193953125 |
| Square root | 113.688170 (= 5√517) |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 169 |
| Scientific notation | 1.2925 × |
12925 in other forms
| Form | Value |
|---|---|
| In words | twelve thousand nine hundred and twenty-five |
| Binary (base 2) | 11001001111101 |
| Octal (base 8) | 31175 |
| Hexadecimal (base 16) | 327D |
| Base 3 | 122201201 |
| As time | 12925 seconds = 3 h 35 min 25 s |
Is 12925 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 (12925 ÷ 5 = 2585) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | 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 | Yes (12925 ÷ 11 = 1175) | 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 12925 a prime number?
No. 12925 = × 11 × 47, so it is divisible by 5.
What are the factors of 12925?
1, 5, 11, 25, 47, 55, 235, 275, 517, 1175, 2585, 12925.
What is 12925 in binary?
11001001111101 (hexadecimal 327D, octal 31175).
What is the square root of 12925?
About 113.6882, exactly 5√517.
Is 12925 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 12925?
It is a composite number with 12 divisors.