25260556579 has 2 divisors, whose sum is σ = 25260556580. Its totient is φ = 25260556578.

The previous prime is 25260556549. The next prime is 25260556591. The reversal of 25260556579 is 97565506252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25260556579 - 2²⁷ = 25126338851 is a prime.

It is not a weakly prime, because it can be changed into another prime (25260556549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630278289 + 12630278290.

It is an arithmetic number, because the mean of its divisors is an integer number (12630278290).

Almost surely, 2^25260556579 is an apocalyptic number.

25260556579 is a deficient number, since it is larger than the sum of its proper divisors (1).

25260556579 is an equidigital number, since it uses as much as digits as its factorization.

25260556579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670000, while the sum is 52.

The spelling of 25260556579 in words is "twenty-five billion, two hundred sixty million, five hundred fifty-six thousand, five hundred seventy-nine".