251325232 has 40 divisors (see below), whose sum is σ = 515324160. Its totient is φ = 118493760.

The previous prime is 251325227. The next prime is 251325247. The reversal of 251325232 is 232523152.

It is a junction number, because it is equal to n+sod(n) for n = 251325197 and 251325206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21319 + ... + 30937.

It is an arithmetic number, because the mean of its divisors is an integer number (12883104).

Almost surely, 2^251325232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251325232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257662080).

251325232 is an abundant number, since it is smaller than the sum of its proper divisors (263998928).

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

251325232 is a wasteful number, since it uses less digits than its factorization.

251325232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9721 (or 9715 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 251325232 is about 15853.2404258562. The cubic root of 251325232 is about 631.0716889825.

Adding to 251325232 its reverse (232523152), we get a palindrome (483848384).

The spelling of 251325232 in words is "two hundred fifty-one million, three hundred twenty-five thousand, two hundred thirty-two".