25172828 has 6 divisors (see below), whose sum is σ = 44052456. Its totient is φ = 12586412.

The previous prime is 25172803. The next prime is 25172843. The reversal of 25172828 is 82827152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3146600 + ... + 3146607.

It is an arithmetic number, because the mean of its divisors is an integer number (7342076).

Almost surely, 2^25172828 is an apocalyptic number.

It is an amenable number.

25172828 is a deficient number, since it is larger than the sum of its proper divisors (18879628).

25172828 is a wasteful number, since it uses less digits than its factorization.

25172828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293211 (or 6293209 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 25172828 is about 5017.2530332842. The cubic root of 25172828 is about 293.0740299141.

The spelling of 25172828 in words is "twenty-five million, one hundred seventy-two thousand, eight hundred twenty-eight".