25172124 has 48 divisors (see below), whose sum is σ = 61157376. Its totient is φ = 8049600.

The previous prime is 25172123. The next prime is 25172167. The reversal of 25172124 is 42127152.

It is a junction number, because it is equal to n+sod(n) for n = 25172094 and 25172103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172123) 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, 58189 + ... + 58619.

It is an arithmetic number, because the mean of its divisors is an integer number (1274112).

Almost surely, 2^25172124 is an apocalyptic number.

It is an amenable number.

25172124 is an abundant number, since it is smaller than the sum of its proper divisors (35985252).

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

25172124 is a wasteful number, since it uses less digits than its factorization.

25172124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 624 counting only the distinct ones).

The product of its digits is 1120, while the sum is 24.

The square root of 25172124 is about 5017.1828748811. The cubic root of 25172124 is about 293.0712977878.

Adding to 25172124 its reverse (42127152), we get a palindrome (67299276).

The spelling of 25172124 in words is "twenty-five million, one hundred seventy-two thousand, one hundred twenty-four".