25376672166563 has 2 divisors, whose sum is σ = 25376672166564. Its totient is φ = 25376672166562.

The previous prime is 25376672166467. The next prime is 25376672166589. The reversal of 25376672166563 is 36566127667352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25376672166563 - 2¹⁰ = 25376672165539 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25376672166563.

It is not a weakly prime, because it can be changed into another prime (25376672160563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12688336083281 + 12688336083282.

It is an arithmetic number, because the mean of its divisors is an integer number (12688336083282).

Almost surely, 2^{25376672166563} is an apocalyptic number.

25376672166563 is a deficient number, since it is larger than the sum of its proper divisors (1).

25376672166563 is an equidigital number, since it uses as much as digits as its factorization.

25376672166563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 342921600, while the sum is 65.

The spelling of 25376672166563 in words is "twenty-five trillion, three hundred seventy-six billion, six hundred seventy-two million, one hundred sixty-six thousand, five hundred sixty-three".