25989172 has 48 divisors (see below), whose sum is σ = 52746624. Its totient is φ = 11088000.

The previous prime is 25989151. The next prime is 25989181. The reversal of 25989172 is 27198952.

It is a super-2 number, since 2×25989172² = 1350874122491168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61522 + ... + 61942.

It is an arithmetic number, because the mean of its divisors is an integer number (1098888).

Almost surely, 2^25989172 is an apocalyptic number.

25989172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25989172 is an abundant number, since it is smaller than the sum of its proper divisors (26757452).

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

25989172 is a wasteful number, since it uses less digits than its factorization.

25989172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 25989172 is about 5097.9576302672. The cubic root of 25989172 is about 296.2084756080.

The spelling of 25989172 in words is "twenty-five million, nine hundred eighty-nine thousand, one hundred seventy-two".