25664372 has 12 divisors (see below), whose sum is σ = 45142020. Its totient is φ = 12766656.

The previous prime is 25664371. The next prime is 25664423. The reversal of 25664372 is 27346652.

It can be written as a sum of positive squares in 2 ways, for example, as 25140196 + 524176 = 5014^2 + 724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25664371) 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, 15497 + ... + 17072.

It is an arithmetic number, because the mean of its divisors is an integer number (3761835).

Almost surely, 2^25664372 is an apocalyptic number.

It is an amenable number.

25664372 is a deficient number, since it is larger than the sum of its proper divisors (19477648).

25664372 is a wasteful number, since it uses less digits than its factorization.

25664372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32770 (or 32768 counting only the distinct ones).

The product of its digits is 60480, while the sum is 35.

The square root of 25664372 is about 5066.0015791549. The cubic root of 25664372 is about 294.9693427875.

The spelling of 25664372 in words is "twenty-five million, six hundred sixty-four thousand, three hundred seventy-two".