25011664 has 10 divisors (see below), whose sum is σ = 48460130. Its totient is φ = 12505824.

The previous prime is 25011653. The next prime is 25011671. The reversal of 25011664 is 46611052.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 11664 = 5000^2 + 108^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781599 + ... + 781630.

It is an arithmetic number, because the mean of its divisors is an integer number (4846013).

Almost surely, 2^25011664 is an apocalyptic number.

It is an amenable number.

25011664 is a deficient number, since it is larger than the sum of its proper divisors (23448466).

25011664 is a wasteful number, since it uses less digits than its factorization.

25011664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563237 (or 1563231 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 25011664 is about 5001.1662639828. The cubic root of 25011664 is about 292.4472410748.

The spelling of 25011664 in words is "twenty-five million, eleven thousand, six hundred sixty-four".