25713331550717 has 2 divisors, whose sum is σ = 25713331550718. Its totient is φ = 25713331550716.

The previous prime is 25713331550663. The next prime is 25713331550743. The reversal of 25713331550717 is 71705513331752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18233702768836 + 7479628781881 = 4270094^2 + 2734891^2 .

It is a cyclic number.

It is not a de Polignac number, because 25713331550717 - 2¹² = 25713331546621 is a prime.

It is a super-2 number, since 2×25713331550717² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25713331550617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12856665775358 + 12856665775359.

It is an arithmetic number, because the mean of its divisors is an integer number (12856665775359).

Almost surely, 2^{25713331550717} is an apocalyptic number.

It is an amenable number.

25713331550717 is a deficient number, since it is larger than the sum of its proper divisors (1).

25713331550717 is an equidigital number, since it uses as much as digits as its factorization.

25713331550717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2315250, while the sum is 50.

The spelling of 25713331550717 in words is "twenty-five trillion, seven hundred thirteen billion, three hundred thirty-one million, five hundred fifty thousand, seven hundred seventeen".