25257164 has 6 divisors (see below), whose sum is σ = 44200044. Its totient is φ = 12628580.

The previous prime is 25257163. The next prime is 25257181. The reversal of 25257164 is 46175252.

It is a self number, because there is not a number n which added to its sum of digits gives 25257164.

It is not an unprimeable number, because it can be changed into a prime (25257161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3157142 + ... + 3157149.

It is an arithmetic number, because the mean of its divisors is an integer number (7366674).

Almost surely, 2^25257164 is an apocalyptic number.

It is an amenable number.

25257164 is a deficient number, since it is larger than the sum of its proper divisors (18942880).

25257164 is a wasteful number, since it uses less digits than its factorization.

25257164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6314295 (or 6314293 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 25257164 is about 5025.6506046481. The cubic root of 25257164 is about 293.4009583525.

The spelling of 25257164 in words is "twenty-five million, two hundred fifty-seven thousand, one hundred sixty-four".