251205232 has 20 divisors (see below), whose sum is σ = 512327080. Its totient is φ = 118991808.

The previous prime is 251205217. The next prime is 251205257. The reversal of 251205232 is 232502152.

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, 412863 + ... + 413470.

It is an arithmetic number, because the mean of its divisors is an integer number (25616354).

Almost surely, 2^251205232 is an apocalyptic number.

It is an amenable number.

251205232 is an abundant number, since it is smaller than the sum of its proper divisors (261121848).

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

251205232 is a wasteful number, since it uses less digits than its factorization.

251205232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826360 (or 826354 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 251205232 is about 15849.4552587778. The cubic root of 251205232 is about 630.9712339427.

Adding to 251205232 its reverse (232502152), we get a palindrome (483707384).

The spelling of 251205232 in words is "two hundred fifty-one million, two hundred five thousand, two hundred thirty-two".