| Base | Representation |
|---|---|
| bin | 1100100001000101101… |
| … | …1110101110001101001 |
| 3 | 202120001120100100000000 |
| 4 | 3020101123311301221 |
| 5 | 12010400431010000 |
| 6 | 242442144133213 |
| 7 | 21351625166232 |
| oct | 3102133656151 |
| 9 | 676046310000 |
| 10 | 215040875625 |
| 11 | 8321aa71724 |
| 12 | 35814907209 |
| 13 | 1738047a494 |
| 14 | a59d906089 |
| 15 | 58d8b60000 |
| hex | 32116f5c69 |
215040875625 has 135 divisors (see below), whose sum is σ = 404819877891. Its totient is φ = 114187644000.
The previous prime is 215040875611. The next prime is 215040875627. The reversal of 215040875625 is 526578040512.
The square root of 215040875625 is 463725.
It is a perfect power (a square), and thus also a powerful number.
215040875625 is a `hidden beast` number, since 2 + 1 + 5 + 0 + 4 + 0 + 87 + 562 + 5 = 666.
215040875625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 7 ways, for example, as 58538350809 + 156502524816 = 241947^2 + 395604^2 .
It is a tau number, because it is divible by the number of its divisors (135).
It is not a de Polignac number, because 215040875625 - 215 = 215040842857 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is not an unprimeable number, because it can be changed into a prime (215040875627) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 939043011 + ... + 939043239.
Almost surely, 2215040875625 is an apocalyptic number.
215040875625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
215040875625 is the 463725-th square number.
215040875625 is the 231863-rd centered octagonal number.
It is an amenable number.
215040875625 is a deficient number, since it is larger than the sum of its proper divisors (189779002266).
215040875625 is an frugal number, since it uses more digits than its factorization.
215040875625 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 502 (or 237 counting only the distinct ones).
The product of its (nonzero) digits is 672000, while the sum is 45.
The spelling of 215040875625 in words is "two hundred fifteen billion, forty million, eight hundred seventy-five thousand, six hundred twenty-five".
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