315815628125 has 12 divisors (see below), whose sum is σ = 394744273812. Its totient is φ = 252652500000.

The previous prime is 315815628031. The next prime is 315815628127. The reversal of 315815628125 is 521826518513.

It can be written as a sum of positive squares in 6 ways, for example, as 278617176964 + 37198451161 = 527842^2 + 192869^2 .

It is not a de Polignac number, because 315815628125 - 2¹² = 315815624029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315815628125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315815628127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50527376 + ... + 50533625.

It is an arithmetic number, because the mean of its divisors is an integer number (32895356151).

Almost surely, 2^315815628125 is an apocalyptic number.

It is an amenable number.

315815628125 is a deficient number, since it is larger than the sum of its proper divisors (78928645687).

315815628125 is an frugal number, since it uses more digits than its factorization.

315815628125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101061026 (or 101061006 counting only the distinct ones).

The product of its digits is 576000, while the sum is 47.

The spelling of 315815628125 in words is "three hundred fifteen billion, eight hundred fifteen million, six hundred twenty-eight thousand, one hundred twenty-five".