25663668362047 has 2 divisors, whose sum is σ = 25663668362048. Its totient is φ = 25663668362046.

The previous prime is 25663668362041. The next prime is 25663668362131. The reversal of 25663668362047 is 74026386636652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25663668362047 - 2³⁵ = 25629308623679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25663668362047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25663668362041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12831834181023 + 12831834181024.

It is an arithmetic number, because the mean of its divisors is an integer number (12831834181024).

Almost surely, 2^{25663668362047} is an apocalyptic number.

25663668362047 is a deficient number, since it is larger than the sum of its proper divisors (1).

25663668362047 is an equidigital number, since it uses as much as digits as its factorization.

25663668362047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313528320, while the sum is 64.

The spelling of 25663668362047 in words is "twenty-five trillion, six hundred sixty-three billion, six hundred sixty-eight million, three hundred sixty-two thousand, forty-seven".