25522664 has 16 divisors (see below), whose sum is σ = 49022820. Its totient is φ = 12449920.

The previous prime is 25522649. The next prime is 25522669. The reversal of 25522664 is 46622552.

It can be written as a sum of positive squares in 2 ways, for example, as 25502500 + 20164 = 5050^2 + 142^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25522664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25522669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38579 + ... + 39234.

Almost surely, 2^25522664 is an apocalyptic number.

It is an amenable number.

25522664 is a deficient number, since it is larger than the sum of its proper divisors (23500156).

25522664 is a wasteful number, since it uses less digits than its factorization.

25522664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77860 (or 77856 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 25522664 is about 5051.9960411703. The cubic root of 25522664 is about 294.4254411005.

The spelling of 25522664 in words is "twenty-five million, five hundred twenty-two thousand, six hundred sixty-four".