251122632 has 16 divisors (see below), whose sum is σ = 627806640. Its totient is φ = 83707536.

The previous prime is 251122631. The next prime is 251122649. The reversal of 251122632 is 236221152.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 10463443 = 251122632 / (2 + 5 + 1 + 1 + 2 + 2 + 6 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (251122631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5231698 + ... + 5231745.

It is an arithmetic number, because the mean of its divisors is an integer number (39237915).

Almost surely, 2^251122632 is an apocalyptic number.

It is an amenable number.

251122632 is an abundant number, since it is smaller than the sum of its proper divisors (376684008).

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

251122632 is a wasteful number, since it uses less digits than its factorization.

251122632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10463452 (or 10463448 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 251122632 is about 15846.8492767490. The cubic root of 251122632 is about 630.9020687997.

Adding to 251122632 its reverse (236221152), we get a palindrome (487343784).

The spelling of 251122632 in words is "two hundred fifty-one million, one hundred twenty-two thousand, six hundred thirty-two".