The number 40525
40525 is a composite number with 6 divisors. Its prime factorisation is Ć 1621. Divisors (6): 1, 5, 25, 1621, 8105, 40525.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40525: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
40525 is composite. Its prime factorisation is
- 3
The divisors add up to 50282; without 40525 itself that is 9757, so 40525 is deficient (9757 is less than 40525). Euler's totient Ļ(40525) = 32400 numbers up to 40525 share no factor with it.
- 4
The digits of 40525 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40525 = 5^{2} \times 1621 \]40525 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 50282 |
| Euler totient Ļ(n) | 32400 |
| Square | 1642275625 |
| Cube | 66553219703125 |
| Square root | 201.308221 (= 5ā1621) |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 75 |
| Scientific notation | 4.0525 Ć |
40525 in other forms
| Form | Value |
|---|---|
| In words | forty thousand five hundred and twenty-five |
| Binary (base 2) | 1001111001001101 |
| Octal (base 8) | 117115 |
| Hexadecimal (base 16) | 9E4D |
| Base 3 | 2001120221 |
| As time | 40525 seconds = 11 h 15 min 25 s |
Is 40525 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 (40525 Ć· 5 = 8105) | 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 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 7) | 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 40525 a prime number?
No. 40525 = Ć 1621, so it is divisible by 5.
What are the factors of 40525?
1, 5, 25, 1621, 8105, 40525.
What is 40525 in binary?
1001111001001101 (hexadecimal 9E4D, octal 117115).
What is the square root of 40525?
About 201.3082, exactly 5ā1621.
Is 40525 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 40525?
40525 is a happy number: repeatedly adding the squares of its digits reaches 1.