Base | Representation |
---|---|
bin | 101111111011… |
… | …0110010001011 |
3 | 1202021122020110 |
4 | 1133312302023 |
5 | 22413044300 |
6 | 2254325403 |
7 | 423404460 |
oct | 137666213 |
9 | 52248213 |
10 | 25128075 |
11 | 13203105 |
12 | 84b9863 |
13 | 528a5ab |
14 | 34a1667 |
15 | 2315550 |
hex | 17f6c8b |
25128075 has 48 divisors (see below), whose sum is σ = 49568256. Its totient is φ = 10982400.
The previous prime is 25128067. The next prime is 25128101. The reversal of 25128075 is 57082152.
It is not a de Polignac number, because 25128075 - 23 = 25128067 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11035 + ... + 13115.
It is an arithmetic number, because the mean of its divisors is an integer number (1032672).
Almost surely, 225128075 is an apocalyptic number.
25128075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
25128075 is a deficient number, since it is larger than the sum of its proper divisors (24440181).
25128075 is a wasteful number, since it uses less digits than its factorization.
25128075 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2124 (or 2119 counting only the distinct ones).
The product of its (nonzero) digits is 5600, while the sum is 30.
The square root of 25128075 is about 5012.7911386771. The cubic root of 25128075 is about 292.9002483220.
The spelling of 25128075 in words is "twenty-five million, one hundred twenty-eight thousand, seventy-five".
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