25908131 has 4 divisors (see below), whose sum is σ = 25925952. Its totient is φ = 25890312.

The previous prime is 25908109. The next prime is 25908137. The reversal of 25908131 is 13180952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25908131 - 2⁶ = 25908067 is a prime.

It is a super-2 number, since 2×25908131² = 1342462503826322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25908094 and 25908103.

It is not an unprimeable number, because it can be changed into a prime (25908137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6515 + ... + 9708.

It is an arithmetic number, because the mean of its divisors is an integer number (6481488).

Almost surely, 2^25908131 is an apocalyptic number.

25908131 is a deficient number, since it is larger than the sum of its proper divisors (17821).

25908131 is a wasteful number, since it uses less digits than its factorization.

25908131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17820.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 25908131 is about 5090.0030451857. The cubic root of 25908131 is about 295.9002699997.

The spelling of 25908131 in words is "twenty-five million, nine hundred eight thousand, one hundred thirty-one".