25616322593 has 2 divisors, whose sum is σ = 25616322594. Its totient is φ = 25616322592.

The previous prime is 25616322569. The next prime is 25616322607. The reversal of 25616322593 is 39522361652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14083280929 + 11533041664 = 118673^2 + 107392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25616322593 is a prime.

It is not a weakly prime, because it can be changed into another prime (25616322293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12808161296 + 12808161297.

It is an arithmetic number, because the mean of its divisors is an integer number (12808161297).

Almost surely, 2^25616322593 is an apocalyptic number.

It is an amenable number.

25616322593 is a deficient number, since it is larger than the sum of its proper divisors (1).

25616322593 is an equidigital number, since it uses as much as digits as its factorization.

25616322593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 44.

The spelling of 25616322593 in words is "twenty-five billion, six hundred sixteen million, three hundred twenty-two thousand, five hundred ninety-three".