1251375137625 has 16 divisors (see below), whose sum is σ = 2082288229632. Its totient is φ = 667400073200.

The previous prime is 1251375137549. The next prime is 1251375137647. The reversal of 1251375137625 is 5267315731521.

It is not a de Polignac number, because 1251375137625 - 2¹² = 1251375133529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668499809 + ... + 1668500558.

It is an arithmetic number, because the mean of its divisors is an integer number (130143014352).

Almost surely, 2^{1251375137625} is an apocalyptic number.

1251375137625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1251375137625 is a deficient number, since it is larger than the sum of its proper divisors (830913092007).

1251375137625 is an equidigital number, since it uses as much as digits as its factorization.

1251375137625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337000385 (or 3337000375 counting only the distinct ones).

The product of its digits is 1323000, while the sum is 48.

The spelling of 1251375137625 in words is "one trillion, two hundred fifty-one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred twenty-five".