The number 10425
10425 is a composite number with 12 divisors. Its prime factorisation is 3 × × 139. Divisors (12): 1, 3, 5, 15, 25, 75, 139, 417, 695, 2085, 3475, 10425.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
10425 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
10425 is composite. Its prime factorisation is
- 3
The divisors add up to 17360; without 10425 itself that is 6935, so 10425 is deficient (6935 is less than 10425). Euler's totient φ(10425) = 5520 numbers up to 10425 share no factor with it.
- 4
The digits of 10425 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 42 steps to reach 1.
LaTeX source of the formulas on this page
\[ 10425 = 3 \times 5^{2} \times 139 \]10425 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 17360 |
| Euler totient φ(n) | 5520 |
| Square | 108680625 |
| Cube | 1132995515625 |
| Square root | 102.102889 (= 5√417) |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 42 |
| Scientific notation | 1.0425 × |
10425 in other forms
| Form | Value |
|---|---|
| In words | ten thousand four hundred and twenty-five |
| Binary (base 2) | 10100010111001 |
| Octal (base 8) | 24271 |
| Hexadecimal (base 16) | 28B9 |
| Base 3 | 112022010 |
| As time | 10425 seconds = 2 h 53 min 45 s |
Is 10425 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 | Yes (10425 ÷ 3 = 3475) | 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 (10425 ÷ 5 = 2085) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 3) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 10425 a prime number?
No. 10425 = 3 × × 139, so it is divisible by 3.
What are the factors of 10425?
1, 3, 5, 15, 25, 75, 139, 417, 695, 2085, 3475, 10425.
What is 10425 in binary?
10100010111001 (hexadecimal 28B9, octal 24271).
What is the square root of 10425?
About 102.1029, exactly 5√417.
Is 10425 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 10425?
It is a composite number with 12 divisors.