The number 12425
12425 is a composite number with 12 divisors. Its prime factorisation is × 7 × 71. Divisors (12): 1, 5, 7, 25, 35, 71, 175, 355, 497, 1775, 2485, 12425.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
12425 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
12425 is composite. Its prime factorisation is
- 3
The divisors add up to 17856; without 12425 itself that is 5431, so 12425 is deficient (5431 is less than 12425). Euler's totient φ(12425) = 8400 numbers up to 12425 share no factor with it.
- 4
The digits of 12425 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 94 steps to reach 1.
LaTeX source of the formulas on this page
\[ 12425 = 5^{2} \times 7 \times 71 \]12425 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 17856 |
| Euler totient φ(n) | 8400 |
| Square | 154380625 |
| Cube | 1918179265625 |
| Square root | 111.467484 (= 5√497) |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 94 |
| Scientific notation | 1.2425 × |
12425 in other forms
| Form | Value |
|---|---|
| In words | twelve thousand four hundred and twenty-five |
| Binary (base 2) | 11000010001001 |
| Octal (base 8) | 30211 |
| Hexadecimal (base 16) | 3089 |
| Base 3 | 122001012 |
| As time | 12425 seconds = 3 h 27 min 5 s |
Is 12425 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 (12425 ÷ 5 = 2485) | 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 | Yes (12425 ÷ 7 = 1775) | 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 5) | 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 6) | 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 12425 a prime number?
No. 12425 = × 7 × 71, so it is divisible by 5.
What are the factors of 12425?
1, 5, 7, 25, 35, 71, 175, 355, 497, 1775, 2485, 12425.
What is 12425 in binary?
11000010001001 (hexadecimal 3089, octal 30211).
What is the square root of 12425?
About 111.4675, exactly 5√497.
Is 12425 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 12425?
It is a composite number with 12 divisors.