251115152022 has 80 divisors (see below), whose sum is σ = 643251879072. Its totient is φ = 71726601600.

The previous prime is 251115152011. The next prime is 251115152089. The reversal of 251115152022 is 220251511152.

251115152022 is a `hidden beast` number, since 2 + 5 + 1 + 115 + 1 + 520 + 22 = 666.

251115152022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4167018 + ... + 4226850.

Almost surely, 2^251115152022 is an apocalyptic number.

251115152022 is an abundant number, since it is smaller than the sum of its proper divisors (392136727050).

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

251115152022 is a wasteful number, since it uses less digits than its factorization.

251115152022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63555 (or 63546 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 251115152022 its reverse (220251511152), we get a palindrome (471366663174).

The spelling of 251115152022 in words is "two hundred fifty-one billion, one hundred fifteen million, one hundred fifty-two thousand, twenty-two".