25164564 has 12 divisors (see below), whose sum is σ = 58717344. Its totient is φ = 8388184.

The previous prime is 25164563. The next prime is 25164577. The reversal of 25164564 is 46546152.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25164563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048512 + ... + 1048535.

It is an arithmetic number, because the mean of its divisors is an integer number (4893112).

Almost surely, 2^25164564 is an apocalyptic number.

It is an amenable number.

25164564 is an abundant number, since it is smaller than the sum of its proper divisors (33552780).

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

25164564 is a wasteful number, since it uses less digits than its factorization.

25164564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097054 (or 2097052 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 25164564 is about 5016.4294074571. The cubic root of 25164564 is about 293.0419552651.

The spelling of 25164564 in words is "twenty-five million, one hundred sixty-four thousand, five hundred sixty-four".