25551232 has 32 divisors (see below), whose sum is σ = 58176720. Its totient is φ = 10950144.

The previous prime is 25551217. The next prime is 25551263. The reversal of 25551232 is 23215552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 25551197 and 25551206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13363 + ... + 15154.

Almost surely, 2^25551232 is an apocalyptic number.

It is an amenable number.

25551232 is an abundant number, since it is smaller than the sum of its proper divisors (32625488).

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

25551232 is an equidigital number, since it uses as much as digits as its factorization.

25551232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28538 (or 28526 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 25551232 is about 5054.8226477296. The cubic root of 25551232 is about 294.5352521257.

Adding to 25551232 its reverse (23215552), we get a palindrome (48766784).

The spelling of 25551232 in words is "twenty-five million, five hundred fifty-one thousand, two hundred thirty-two".