1312550125 has 16 divisors (see below), whose sum is σ = 1645443072. Its totient is φ = 1045309200.

The previous prime is 1312550119. The next prime is 1312550149. The reversal of 1312550125 is 5210552131.

It is not a de Polignac number, because 1312550125 - 2³ = 1312550117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 1312550125.

It is a congruent number.

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, 4332 + ... + 51418.

It is an arithmetic number, because the mean of its divisors is an integer number (102840192).

Almost surely, 2^1312550125 is an apocalyptic number.

It is an amenable number.

1312550125 is a deficient number, since it is larger than the sum of its proper divisors (332892947).

1312550125 is an equidigital number, since it uses as much as digits as its factorization.

1312550125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47325 (or 47315 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1312550125 is about 36229.1336495920. The cubic root of 1312550125 is about 1094.8937227880.

The spelling of 1312550125 in words is "one billion, three hundred twelve million, five hundred fifty thousand, one hundred twenty-five".