1251318875125 has 32 divisors (see below), whose sum is σ = 1703757369600. Its totient is φ = 909973384000.

The previous prime is 1251318875117. The next prime is 1251318875243. The reversal of 1251318875125 is 5215788131521.

It is not a de Polignac number, because 1251318875125 - 2³ = 1251318875117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20138856 + ... + 20200894.

It is an arithmetic number, because the mean of its divisors is an integer number (53242417800).

Almost surely, 2^{1251318875125} is an apocalyptic number.

It is an amenable number.

1251318875125 is a deficient number, since it is larger than the sum of its proper divisors (452438494475).

1251318875125 is a wasteful number, since it uses less digits than its factorization.

1251318875125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76734 (or 76724 counting only the distinct ones).

The product of its digits is 672000, while the sum is 49.

The spelling of 1251318875125 in words is "one trillion, two hundred fifty-one billion, three hundred eighteen million, eight hundred seventy-five thousand, one hundred twenty-five".