25190664 has 16 divisors (see below), whose sum is σ = 62976720. Its totient is φ = 8396880.

The previous prime is 25190629. The next prime is 25190677. The reversal of 25190664 is 46609152.

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, 524782 + ... + 524829.

It is an arithmetic number, because the mean of its divisors is an integer number (3936045).

Almost surely, 2^25190664 is an apocalyptic number.

25190664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25190664 is an abundant number, since it is smaller than the sum of its proper divisors (37786056).

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

25190664 is a wasteful number, since it uses less digits than its factorization.

25190664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049620 (or 1049616 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 25190664 is about 5019.0301852051. The cubic root of 25190664 is about 293.1432319694.

The spelling of 25190664 in words is "twenty-five million, one hundred ninety thousand, six hundred sixty-four".