25397166 has 16 divisors (see below), whose sum is σ = 50850000. Its totient is φ = 8456448.

The previous prime is 25397161. The next prime is 25397179. The reversal of 25397166 is 66179352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25397161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5800 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (3178125).

Almost surely, 2^25397166 is an apocalyptic number.

25397166 is an abundant number, since it is smaller than the sum of its proper divisors (25452834).

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

25397166 is a wasteful number, since it uses less digits than its factorization.

25397166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643.

The product of its digits is 68040, while the sum is 39.

The square root of 25397166 is about 5039.5600998500. The cubic root of 25397166 is about 293.9420729040.

The spelling of 25397166 in words is "twenty-five million, three hundred ninety-seven thousand, one hundred sixty-six".