251113021252 has 12 divisors (see below), whose sum is σ = 442802351376. Its totient is φ = 124598063720.

The previous prime is 251113021217. The next prime is 251113021253. The reversal of 251113021252 is 252120311152.

It is a happy number.

251113021252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (251113021253) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 239611138 + ... + 239612185.

It is an arithmetic number, because the mean of its divisors is an integer number (36900195948).

Almost surely, 2^251113021252 is an apocalyptic number.

It is an amenable number.

251113021252 is a deficient number, since it is larger than the sum of its proper divisors (191689330124).

251113021252 is a wasteful number, since it uses less digits than its factorization.

251113021252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479223458 (or 479223456 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 251113021252 in words is "two hundred fifty-one billion, one hundred thirteen million, twenty-one thousand, two hundred fifty-two".