25979164 has 12 divisors (see below), whose sum is σ = 45680488. Its totient is φ = 12927600.

The previous prime is 25979159. The next prime is 25979171. The reversal of 25979164 is 46197952.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25979164.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14547 + ... + 16234.

Almost surely, 2^25979164 is an apocalyptic number.

It is an amenable number.

25979164 is a deficient number, since it is larger than the sum of its proper divisors (19701324).

25979164 is a wasteful number, since it uses less digits than its factorization.

25979164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30996 (or 30994 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 25979164 is about 5096.9759661980. The cubic root of 25979164 is about 296.1704490660.

The spelling of 25979164 in words is "twenty-five million, nine hundred seventy-nine thousand, one hundred sixty-four".