25636479 has 16 divisors (see below), whose sum is σ = 38085120. Its totient is φ = 15205760.

The previous prime is 25636463. The next prime is 25636483. The reversal of 25636479 is 97463652.

It is a cyclic number.

It is not a de Polignac number, because 25636479 - 2⁴ = 25636463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25636479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25636489) 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, 6714 + ... + 9815.

It is an arithmetic number, because the mean of its divisors is an integer number (2380320).

Almost surely, 2^25636479 is an apocalyptic number.

25636479 is a deficient number, since it is larger than the sum of its proper divisors (12448641).

25636479 is a wasteful number, since it uses less digits than its factorization.

25636479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16590.

The product of its digits is 272160, while the sum is 42.

The square root of 25636479 is about 5063.2478706854. The cubic root of 25636479 is about 294.8624428101.

The spelling of 25636479 in words is "twenty-five million, six hundred thirty-six thousand, four hundred seventy-nine".