25644464 has 20 divisors (see below), whose sum is σ = 49996056. Its totient is φ = 12742272.

The previous prime is 25644431. The next prime is 25644467. The reversal of 25644464 is 46444652.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25644467) 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, 2309 + ... + 7524.

Almost surely, 2^25644464 is an apocalyptic number.

It is an amenable number.

25644464 is a deficient number, since it is larger than the sum of its proper divisors (24351592).

25644464 is a wasteful number, since it uses less digits than its factorization.

25644464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10004 (or 9998 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

The square root of 25644464 is about 5064.0363347828. The cubic root of 25644464 is about 294.8930532565.

The spelling of 25644464 in words is "twenty-five million, six hundred forty-four thousand, four hundred sixty-four".