1317797525 has 24 divisors (see below), whose sum is σ = 1798438464. Its totient is φ = 949894400.

The previous prime is 1317797521. The next prime is 1317797539. The reversal of 1317797525 is 5257977131.

It is a happy number.

It is not a de Polignac number, because 1317797525 - 2² = 1317797521 is a prime.

It is a super-2 number, since 2×1317797525² = 3473180633792251250, which contains 22 as substring.

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 1317797525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317797521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9872 + ... + 52278.

It is an arithmetic number, because the mean of its divisors is an integer number (74934936).

Almost surely, 2^1317797525 is an apocalyptic number.

It is an amenable number.

1317797525 is a deficient number, since it is larger than the sum of its proper divisors (480640939).

1317797525 is a wasteful number, since it uses less digits than its factorization.

1317797525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42541 (or 42536 counting only the distinct ones).

The product of its digits is 463050, while the sum is 47.

The square root of 1317797525 is about 36301.4810303932. The cubic root of 1317797525 is about 1096.3508622900.

The spelling of 1317797525 in words is "one billion, three hundred seventeen million, seven hundred ninety-seven thousand, five hundred twenty-five".