25456664 has 32 divisors (see below), whose sum is σ = 49734000. Its totient is φ = 12200832.

The previous prime is 25456661. The next prime is 25456687. The reversal of 25456664 is 46665452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25456661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41222 + ... + 41834.

Almost surely, 2^25456664 is an apocalyptic number.

It is an amenable number.

25456664 is a deficient number, since it is larger than the sum of its proper divisors (24277336).

25456664 is a wasteful number, since it uses less digits than its factorization.

25456664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 823 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 25456664 is about 5045.4597411931. The cubic root of 25456664 is about 294.1714334825.

The spelling of 25456664 in words is "twenty-five million, four hundred fifty-six thousand, six hundred sixty-four".