1252513394128 has 20 divisors (see below), whose sum is σ = 2427846333088. Its totient is φ = 625972404960.

The previous prime is 1252513394087. The next prime is 1252513394129. The reversal of 1252513394128 is 8214933152521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252513394129) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17731908 + ... + 17802403.

Almost surely, 2^{1252513394128} is an apocalyptic number.

It is an amenable number.

1252513394128 is a deficient number, since it is larger than the sum of its proper divisors (1175332938960).

1252513394128 is a wasteful number, since it uses less digits than its factorization.

1252513394128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35536522 (or 35536516 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 1252513394128 in words is "one trillion, two hundred fifty-two billion, five hundred thirteen million, three hundred ninety-four thousand, one hundred twenty-eight".