25166809112579 has 2 divisors, whose sum is σ = 25166809112580. Its totient is φ = 25166809112578.

The previous prime is 25166809112551. The next prime is 25166809112593. The reversal of 25166809112579 is 97521190866152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25166809112579 is a prime.

It is not a weakly prime, because it can be changed into another prime (25166809112519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12583404556289 + 12583404556290.

It is an arithmetic number, because the mean of its divisors is an integer number (12583404556290).

Almost surely, 2^{25166809112579} is an apocalyptic number.

25166809112579 is a deficient number, since it is larger than the sum of its proper divisors (1).

25166809112579 is an equidigital number, since it uses as much as digits as its factorization.

25166809112579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 62.

The spelling of 25166809112579 in words is "twenty-five trillion, one hundred sixty-six billion, eight hundred nine million, one hundred twelve thousand, five hundred seventy-nine".