251865222568152 has 16 divisors (see below), whose sum is σ = 629663056420440. Its totient is φ = 83955074189376.

The previous prime is 251865222568121. The next prime is 251865222568153.

251865222568152 is nontrivially palindromic in base 10.

251865222568152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251865222568153) 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, 5247192136813 + ... + 5247192136860.

Almost surely, 2^{251865222568152} is an apocalyptic number.

It is an amenable number.

251865222568152 is an abundant number, since it is smaller than the sum of its proper divisors (377797833852288).

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

251865222568152 is a wasteful number, since it uses less digits than its factorization.

251865222568152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10494384273682 (or 10494384273678 counting only the distinct ones).

The product of its digits is 46080000, while the sum is 60.

The spelling of 251865222568152 in words is "two hundred fifty-one trillion, eight hundred sixty-five billion, two hundred twenty-two million, five hundred sixty-eight thousand, one hundred fifty-two".