25752681313 has 2 divisors, whose sum is σ = 25752681314. Its totient is φ = 25752681312.

The previous prime is 25752681299. The next prime is 25752681323. The reversal of 25752681313 is 31318625752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22289594209 + 3463087104 = 149297^2 + 58848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25752681313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25752681313.

It is not a weakly prime, because it can be changed into another prime (25752681323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12876340656 + 12876340657.

It is an arithmetic number, because the mean of its divisors is an integer number (12876340657).

Almost surely, 2^25752681313 is an apocalyptic number.

It is an amenable number.

25752681313 is a deficient number, since it is larger than the sum of its proper divisors (1).

25752681313 is an equidigital number, since it uses as much as digits as its factorization.

25752681313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The spelling of 25752681313 in words is "twenty-five billion, seven hundred fifty-two million, six hundred eighty-one thousand, three hundred thirteen".