251142125404 has 48 divisors (see below), whose sum is σ = 465182113536. Its totient is φ = 118467648000.

The previous prime is 251142125393. The next prime is 251142125431. The reversal of 251142125404 is 404521241152.

251142125404 is digitally balanced in base 3, 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 (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910104 + ... + 1153504.

It is an arithmetic number, because the mean of its divisors is an integer number (9691294032).

Almost surely, 2^251142125404 is an apocalyptic number.

It is an amenable number.

251142125404 is a deficient number, since it is larger than the sum of its proper divisors (214039988132).

251142125404 is a wasteful number, since it uses less digits than its factorization.

251142125404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243646 (or 243644 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 251142125404 its reverse (404521241152), we get a palindrome (655663366556).

The spelling of 251142125404 in words is "two hundred fifty-one billion, one hundred forty-two million, one hundred twenty-five thousand, four hundred four".