1313122525 has 24 divisors (see below), whose sum is σ = 1912940064. Its totient is φ = 881534400.

The previous prime is 1313122507. The next prime is 1313122529. The reversal of 1313122525 is 5252213131.

It is a de Polignac number, because none of the positive numbers 2^k-1313122525 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 1313122525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313122529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180079 + ... + 187228.

It is an arithmetic number, because the mean of its divisors is an integer number (79705836).

Almost surely, 2^1313122525 is an apocalyptic number.

It is an amenable number.

1313122525 is a deficient number, since it is larger than the sum of its proper divisors (599817539).

1313122525 is a wasteful number, since it uses less digits than its factorization.

1313122525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367341 (or 367336 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 1313122525 is about 36237.0325081953. The cubic root of 1313122525 is about 1095.0528598434.

Adding to 1313122525 its reverse (5252213131), we get a palindrome (6565335656).

The spelling of 1313122525 in words is "one billion, three hundred thirteen million, one hundred twenty-two thousand, five hundred twenty-five".