The number 13925
13925 is a composite number with 6 divisors. Its prime factorisation is Ć 557. Divisors (6): 1, 5, 25, 557, 2785, 13925.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
13925 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
13925 is composite. Its prime factorisation is
- 3
The divisors add up to 17298; without 13925 itself that is 3373, so 13925 is deficient (3373 is less than 13925). Euler's totient Ļ(13925) = 11120 numbers up to 13925 share no factor with it.
- 4
The digits of 13925 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 58 steps to reach 1.
LaTeX source of the formulas on this page
\[ 13925 = 5^{2} \times 557 \]13925 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 17298 |
| Euler totient Ļ(n) | 11120 |
| Square | 193905625 |
| Cube | 2700135828125 |
| Square root | 118.004237 (= 5ā557) |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 58 |
| Scientific notation | 1.3925 Ć |
13925 in other forms
| Form | Value |
|---|---|
| In words | thirteen thousand nine hundred and twenty-five |
| Binary (base 2) | 11011001100101 |
| Octal (base 8) | 33145 |
| Hexadecimal (base 16) | 3665 |
| Base 3 | 201002202 |
| As time | 13925 seconds = 3 h 52 min 5 s |
Is 13925 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 (13925 Ć· 5 = 2785) | 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 | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 13925 a prime number?
No. 13925 = Ć 557, so it is divisible by 5.
What are the factors of 13925?
1, 5, 25, 557, 2785, 13925.
What is 13925 in binary?
11011001100101 (hexadecimal 3665, octal 33145).
What is the square root of 13925?
About 118.0042, exactly 5ā557.
Is 13925 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 13925?
It is a composite number with 6 divisors.