25164523 has 4 divisors (see below), whose sum is σ = 25182040. Its totient is φ = 25147008.

The previous prime is 25164511. The next prime is 25164527. The reversal of 25164523 is 32546152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25164523 - 2⁹ = 25164011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25164491 and 25164500.

It is not an unprimeable number, because it can be changed into a prime (25164527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6390 + ... + 9547.

It is an arithmetic number, because the mean of its divisors is an integer number (6295510).

Almost surely, 2^25164523 is an apocalyptic number.

25164523 is a deficient number, since it is larger than the sum of its proper divisors (17517).

25164523 is a wasteful number, since it uses less digits than its factorization.

25164523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17516.

The product of its digits is 7200, while the sum is 28.

The square root of 25164523 is about 5016.4253208834. The cubic root of 25164523 is about 293.0417961164.

The spelling of 25164523 in words is "twenty-five million, one hundred sixty-four thousand, five hundred twenty-three".