1257631375125 has 16 divisors (see below), whose sum is σ = 2092698608832. Its totient is φ = 670736733200.

The previous prime is 1257631375123. The next prime is 1257631375141. The reversal of 1257631375125 is 5215731367521.

It is not a de Polignac number, because 1257631375125 - 2¹ = 1257631375123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257631375123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1676841459 + ... + 1676842208.

It is an arithmetic number, because the mean of its divisors is an integer number (130793663052).

Almost surely, 2^{1257631375125} is an apocalyptic number.

1257631375125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1257631375125 is a deficient number, since it is larger than the sum of its proper divisors (835067233707).

1257631375125 is an equidigital number, since it uses as much as digits as its factorization.

1257631375125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353683685 (or 3353683675 counting only the distinct ones).

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

The spelling of 1257631375125 in words is "one trillion, two hundred fifty-seven billion, six hundred thirty-one million, three hundred seventy-five thousand, one hundred twenty-five".