25172524 has 24 divisors (see below), whose sum is σ = 48601728. Its totient is φ = 11333760.

The previous prime is 25172491. The next prime is 25172561. The reversal of 25172524 is 42527152.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25172492 and 25172501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3772 + ... + 8035.

It is an arithmetic number, because the mean of its divisors is an integer number (2025072).

Almost surely, 2^25172524 is an apocalyptic number.

It is an amenable number.

25172524 is a deficient number, since it is larger than the sum of its proper divisors (23429204).

25172524 is a wasteful number, since it uses less digits than its factorization.

25172524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11865 (or 11863 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The square root of 25172524 is about 5017.2227377305. Note that the first 3 decimals coincide. The cubic root of 25172524 is about 293.0728501386.

Adding to 25172524 its reverse (42527152), we get a palindrome (67699676).

It can be divided in two parts, 2517 and 2524, that added together give a square (5041 = 71²).

The spelling of 25172524 in words is "twenty-five million, one hundred seventy-two thousand, five hundred twenty-four".