25979163 has 16 divisors (see below), whose sum is σ = 40396800. Its totient is φ = 14844648.

The previous prime is 25979159. The next prime is 25979171. The reversal of 25979163 is 36197952.

It is not a de Polignac number, because 25979163 - 2² = 25979159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25979963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11595 + ... + 13652.

It is an arithmetic number, because the mean of its divisors is an integer number (2524800).

Almost surely, 2^25979163 is an apocalyptic number.

25979163 is a deficient number, since it is larger than the sum of its proper divisors (14417637).

25979163 is an equidigital number, since it uses as much as digits as its factorization.

25979163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25271 (or 25257 counting only the distinct ones).

The product of its digits is 102060, while the sum is 42.

The square root of 25979163 is about 5096.9758681006. The cubic root of 25979163 is about 296.1704452658.

The spelling of 25979163 in words is "twenty-five million, nine hundred seventy-nine thousand, one hundred sixty-three".