1312125344125 has 16 divisors (see below), whose sum is σ = 1637564451120. Its totient is φ = 1049679748800.

The previous prime is 1312125344083. The next prime is 1312125344129. The reversal of 1312125344125 is 5214435212131.

It can be written as a sum of positive squares in 8 ways, for example, as 477527989156 + 834597354969 = 691034^2 + 913563^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1312125344125 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312125344129) 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, 12019287 + ... + 12127963.

It is an arithmetic number, because the mean of its divisors is an integer number (102347778195).

Almost surely, 2^{1312125344125} is an apocalyptic number.

It is an amenable number.

1312125344125 is a deficient number, since it is larger than the sum of its proper divisors (325439106995).

1312125344125 is an equidigital number, since it uses as much as digits as its factorization.

1312125344125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205281 (or 205271 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The spelling of 1312125344125 in words is "one trillion, three hundred twelve billion, one hundred twenty-five million, three hundred forty-four thousand, one hundred twenty-five".