25553661713 has 2 divisors, whose sum is σ = 25553661714. Its totient is φ = 25553661712.

The previous prime is 25553661701. The next prime is 25553661751. The reversal of 25553661713 is 31716635552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25539875344 + 13786369 = 159812^2 + 3713^2 .

It is a cyclic number.

It is not a de Polignac number, because 25553661713 - 2¹² = 25553657617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25553661613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776830856 + 12776830857.

It is an arithmetic number, because the mean of its divisors is an integer number (12776830857).

Almost surely, 2^25553661713 is an apocalyptic number.

It is an amenable number.

25553661713 is a deficient number, since it is larger than the sum of its proper divisors (1).

25553661713 is an equidigital number, since it uses as much as digits as its factorization.

25553661713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 44.

The spelling of 25553661713 in words is "twenty-five billion, five hundred fifty-three million, six hundred sixty-one thousand, seven hundred thirteen".