25028664 has 16 divisors (see below), whose sum is σ = 62571720. Its totient is φ = 8342880.

The previous prime is 25028659. The next prime is 25028723. The reversal of 25028664 is 46682052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521407 + ... + 521454.

Almost surely, 2^25028664 is an apocalyptic number.

25028664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25028664 is an abundant number, since it is smaller than the sum of its proper divisors (37543056).

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

25028664 is a wasteful number, since it uses less digits than its factorization.

25028664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042870 (or 1042866 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 25028664 is about 5002.8655788458. The cubic root of 25028664 is about 292.5134831976.

The spelling of 25028664 in words is "twenty-five million, twenty-eight thousand, six hundred sixty-four".