The number 40025
40025 is a composite number with 6 divisors. Its prime factorisation is Ć 1601. Divisors (6): 1, 5, 25, 1601, 8005, 40025.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
40025 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
40025 is composite. Its prime factorisation is
- 3
The divisors add up to 49662; without 40025 itself that is 9637, so 40025 is deficient (9637 is less than 40025). Euler's totient Ļ(40025) = 32000 numbers up to 40025 share no factor with it.
- 4
The digits of 40025 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 119 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40025 = 5^{2} \times 1601 \]40025 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 49662 |
| Euler totient Ļ(n) | 32000 |
| Square | 1602000625 |
| Cube | 64120075015625 |
| Square root | 200.062490 (= 5ā1601) |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 119 |
| Scientific notation | 4.0025 Ć |
40025 in other forms
| Form | Value |
|---|---|
| In words | forty thousand and twenty-five |
| Binary (base 2) | 1001110001011001 |
| Octal (base 8) | 116131 |
| Hexadecimal (base 16) | 9C59 |
| Base 3 | 2000220102 |
| As time | 40025 seconds = 11 h 7 min 5 s |
Is 40025 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 (40025 Ć· 5 = 8005) | 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 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 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 7) | 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 40025 a prime number?
No. 40025 = Ć 1601, so it is divisible by 5.
What are the factors of 40025?
1, 5, 25, 1601, 8005, 40025.
What is 40025 in binary?
1001110001011001 (hexadecimal 9C59, octal 116131).
What is the square root of 40025?
About 200.0625, exactly 5ā1601.
Is 40025 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 40025?
It is a composite number with 6 divisors.