25313734717 has 2 divisors, whose sum is σ = 25313734718. Its totient is φ = 25313734716.

The previous prime is 25313734651. The next prime is 25313734727. The reversal of 25313734717 is 71743731352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15509962521 + 9803772196 = 124539^2 + 99014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25313734717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25313734727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12656867358 + 12656867359.

It is an arithmetic number, because the mean of its divisors is an integer number (12656867359).

Almost surely, 2^25313734717 is an apocalyptic number.

It is an amenable number.

25313734717 is a deficient number, since it is larger than the sum of its proper divisors (1).

25313734717 is an equidigital number, since it uses as much as digits as its factorization.

25313734717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 43.

The spelling of 25313734717 in words is "twenty-five billion, three hundred thirteen million, seven hundred thirty-four thousand, seven hundred seventeen".