The number 83425
83425 is a composite number with 12 divisors. Its prime factorisation is × 47 × 71. Divisors (12): 1, 5, 25, 47, 71, 235, 355, 1175, 1775, 3337, 16685, 83425.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
83425 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
83425 is composite. Its prime factorisation is
- 3
The divisors add up to 107136; without 83425 itself that is 23711, so 83425 is deficient (23711 is less than 83425). Euler's totient φ(83425) = 64400 numbers up to 83425 share no factor with it.
- 4
The digits of 83425 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 138 steps to reach 1.
LaTeX source of the formulas on this page
\[ 83425 = 5^{2} \times 47 \times 71 \]83425 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 107136 |
| Euler totient φ(n) | 64400 |
| Square | 6959730625 |
| Cube | 580615527390625 |
| Square root | 288.833862 (= 5√3337) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 138 |
| Scientific notation | 8.3425 × |
83425 in other forms
| Form | Value |
|---|---|
| In words | eighty-three thousand four hundred and twenty-five |
| Binary (base 2) | 10100010111100001 |
| Octal (base 8) | 242741 |
| Hexadecimal (base 16) | 145E1 |
| Base 3 | 11020102211 |
| As time | 83425 seconds = 23 h 10 min 25 s |
Is 83425 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 (83425 ÷ 5 = 16685) | 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 6) | 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 1) | 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 83425 a prime number?
No. 83425 = × 47 × 71, so it is divisible by 5.
What are the factors of 83425?
1, 5, 25, 47, 71, 235, 355, 1175, 1775, 3337, 16685, 83425.
What is 83425 in binary?
10100010111100001 (hexadecimal 145E1, octal 242741).
What is the square root of 83425?
About 288.8339, exactly 5√3337.
Is 83425 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 83425?
It is a composite number with 12 divisors.