1315225874717 has 2 divisors, whose sum is σ = 1315225874718. Its totient is φ = 1315225874716.

The previous prime is 1315225874659. The next prime is 1315225874719. The reversal of 1315225874717 is 7174785225131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783943784836 + 531282089881 = 885406^2 + 728891^2 .

It is an emirp because it is prime and its reverse (7174785225131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315225874717 - 2¹⁸ = 1315225612573 is a prime.

Together with 1315225874719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315225874719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657612937358 + 657612937359.

It is an arithmetic number, because the mean of its divisors is an integer number (657612937359).

Almost surely, 2^{1315225874717} is an apocalyptic number.

It is an amenable number.

1315225874717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315225874717 is an equidigital number, since it uses as much as digits as its factorization.

1315225874717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3292800, while the sum is 53.

The spelling of 1315225874717 in words is "one trillion, three hundred fifteen billion, two hundred twenty-five million, eight hundred seventy-four thousand, seven hundred seventeen".