Base | Representation |
---|---|
bin | 101111101111… |
… | …1000110100111 |
3 | 1202002201012000 |
4 | 1133133012213 |
5 | 22401443304 |
6 | 2252300343 |
7 | 422521623 |
oct | 137370647 |
9 | 52081160 |
10 | 25031079 |
11 | 13147247 |
12 | 84716b3 |
13 | 52553b8 |
14 | 3478183 |
15 | 22e6939 |
hex | 17df1a7 |
25031079 has 8 divisors (see below), whose sum is σ = 37083120. Its totient is φ = 16687368.
The previous prime is 25031077. The next prime is 25031099. The reversal of 25031079 is 97013052.
It is not a de Polignac number, because 25031079 - 21 = 25031077 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 927077 = 25031079 / (2 + 5 + 0 + 3 + 1 + 0 + 7 + 9).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25031077) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463512 + ... + 463565.
It is an arithmetic number, because the mean of its divisors is an integer number (4635390).
Almost surely, 225031079 is an apocalyptic number.
25031079 is a deficient number, since it is larger than the sum of its proper divisors (12052041).
25031079 is an equidigital number, since it uses as much as digits as its factorization.
25031079 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 927086 (or 927080 counting only the distinct ones).
The product of its (nonzero) digits is 1890, while the sum is 27.
The square root of 25031079 is about 5003.1069346957. The cubic root of 25031079 is about 292.5228910422.
It can be divided in two parts, 250 and 31079, that added together give a square (31329 = 1772).
The spelling of 25031079 in words is "twenty-five million, thirty-one thousand, seventy-nine".
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