The number 47425
47425 is a composite number with 12 divisors. Its prime factorisation is × 7 × 271. Divisors (12): 1, 5, 7, 25, 35, 175, 271, 1355, 1897, 6775, 9485, 47425.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47425 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47425 is composite. Its prime factorisation is
- 3
The divisors add up to 67456; without 47425 itself that is 20031, so 47425 is deficient (20031 is less than 47425). Euler's totient φ(47425) = 32400 numbers up to 47425 share no factor with it.
- 4
The digits of 47425 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 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47425 = 5^{2} \times 7 \times 271 \]47425 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 67456 |
| Euler totient φ(n) | 32400 |
| Square | 2249130625 |
| Cube | 106665019890625 |
| Square root | 217.772817 (= 5√1897) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.7425 × |
47425 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and twenty-five |
| Binary (base 2) | 1011100101000001 |
| Octal (base 8) | 134501 |
| Hexadecimal (base 16) | B941 |
| Base 3 | 2102001111 |
| As time | 47425 seconds = 13 h 10 min 25 s |
Is 47425 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 (47425 ÷ 5 = 9485) | 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 (47425 ÷ 7 = 6775) | 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 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 4) | 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 47425 a prime number?
No. 47425 = × 7 × 271, so it is divisible by 5.
What are the factors of 47425?
1, 5, 7, 25, 35, 175, 271, 1355, 1897, 6775, 9485, 47425.
What is 47425 in binary?
1011100101000001 (hexadecimal B941, octal 134501).
What is the square root of 47425?
About 217.7728, exactly 5√1897.
Is 47425 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 47425?
It is a composite number with 12 divisors.