1318875125 has 8 divisors (see below), whose sum is σ = 1645956312. Its totient is φ = 1055100000.

The previous prime is 1318875109. The next prime is 1318875157. The reversal of 1318875125 is 5215788131.

It can be written as a sum of positive squares in 4 ways, for example, as 144168049 + 1174707076 = 12007^2 + 34274^2 .

It is not a de Polignac number, because 1318875125 - 2⁴ = 1318875109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5275376 + ... + 5275625.

It is an arithmetic number, because the mean of its divisors is an integer number (205744539).

Almost surely, 2^1318875125 is an apocalyptic number.

It is an amenable number.

1318875125 is a deficient number, since it is larger than the sum of its proper divisors (327081187).

1318875125 is an equidigital number, since it uses as much as digits as its factorization.

1318875125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551016 (or 10551006 counting only the distinct ones).

The product of its digits is 67200, while the sum is 41.

The square root of 1318875125 is about 36316.3203670196. The cubic root of 1318875125 is about 1096.6496198215.

The spelling of 1318875125 in words is "one billion, three hundred eighteen million, eight hundred seventy-five thousand, one hundred twenty-five".