25560780317 has 2 divisors, whose sum is σ = 25560780318. Its totient is φ = 25560780316.

The previous prime is 25560780281. The next prime is 25560780353. The reversal of 25560780317 is 71308706552.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (25560780281) and next prime (25560780353).

It can be written as a sum of positive squares in only one way, i.e., 16590985636 + 8969794681 = 128806^2 + 94709^2 .

It is a cyclic number.

It is not a de Polignac number, because 25560780317 - 2¹² = 25560776221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25560788317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12780390158 + 12780390159.

It is an arithmetic number, because the mean of its divisors is an integer number (12780390159).

Almost surely, 2^25560780317 is an apocalyptic number.

It is an amenable number.

25560780317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25560780317 is an equidigital number, since it uses as much as digits as its factorization.

25560780317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 25560780317 in words is "twenty-five billion, five hundred sixty million, seven hundred eighty thousand, three hundred seventeen".