251422032 has 80 divisors (see below), whose sum is σ = 669276608. Its totient is φ = 81285120.

The previous prime is 251422021. The next prime is 251422049. The reversal of 251422032 is 230224152.

251422032 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 373248 + ... + 373920.

Almost surely, 2^251422032 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 251422032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334638304).

251422032 is an abundant number, since it is smaller than the sum of its proper divisors (417854576).

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

251422032 is a wasteful number, since it uses less digits than its factorization.

251422032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 251422032 is about 15856.2931355345. The cubic root of 251422032 is about 631.1526994165.

Adding to 251422032 its reverse (230224152), we get a palindrome (481646184).

The spelling of 251422032 in words is "two hundred fifty-one million, four hundred twenty-two thousand, thirty-two".