1312113025 has 6 divisors (see below), whose sum is σ = 1627020182. Its totient is φ = 1049690400.

The previous prime is 1312113007. The next prime is 1312113029. The reversal of 1312113025 is 5203112131.

It can be written as a sum of positive squares in 3 ways, for example, as 286320241 + 1025792784 = 16921^2 + 32028^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1312113025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312112993 and 1312113011.

It is not an unprimeable number, because it can be changed into a prime (1312113029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26242236 + ... + 26242285.

Almost surely, 2^1312113025 is an apocalyptic number.

It is an amenable number.

1312113025 is a deficient number, since it is larger than the sum of its proper divisors (314907157).

1312113025 is an equidigital number, since it uses as much as digits as its factorization.

1312113025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52484531 (or 52484526 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1312113025 is about 36223.1007093540. The cubic root of 1312113025 is about 1094.7721703049.

Adding to 1312113025 its reverse (5203112131), we get a palindrome (6515225156).

The spelling of 1312113025 in words is "one billion, three hundred twelve million, one hundred thirteen thousand, twenty-five".