25651964 has 24 divisors (see below), whose sum is σ = 49142688. Its totient is φ = 11643840.

The previous prime is 25651943. The next prime is 25651987. The reversal of 25651964 is 46915652.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872 + ... + 7215.

It is an arithmetic number, because the mean of its divisors is an integer number (2047612).

Almost surely, 2^25651964 is an apocalyptic number.

It is an amenable number.

25651964 is a deficient number, since it is larger than the sum of its proper divisors (23490724).

25651964 is a wasteful number, since it uses less digits than its factorization.

25651964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8165 (or 8163 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 25651964 is about 5064.7767966614. The cubic root of 25651964 is about 294.9217986721.

The spelling of 25651964 in words is "twenty-five million, six hundred fifty-one thousand, nine hundred sixty-four".