25772664 has 32 divisors (see below), whose sum is σ = 67824000. Its totient is φ = 8138592.

The previous prime is 25772657. The next prime is 25772711. The reversal of 25772664 is 46627752.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27804 + ... + 28715.

It is an arithmetic number, because the mean of its divisors is an integer number (2119500).

Almost surely, 2^25772664 is an apocalyptic number.

25772664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25772664 is an abundant number, since it is smaller than the sum of its proper divisors (42051336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25772664 is a wasteful number, since it uses less digits than its factorization.

25772664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56547 (or 56543 counting only the distinct ones).

The product of its digits is 141120, while the sum is 39.

The square root of 25772664 is about 5076.6784416585. The cubic root of 25772664 is about 295.3836395284.

The spelling of 25772664 in words is "twenty-five million, seven hundred seventy-two thousand, six hundred sixty-four".