25205663012063 has 2 divisors, whose sum is σ = 25205663012064. Its totient is φ = 25205663012062.

The previous prime is 25205663012059. The next prime is 25205663012077. The reversal of 25205663012063 is 36021036650252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25205663012063 - 2² = 25205663012059 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 25205663012063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25205663012093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12602831506031 + 12602831506032.

It is an arithmetic number, because the mean of its divisors is an integer number (12602831506032).

Almost surely, 2^{25205663012063} is an apocalyptic number.

25205663012063 is a deficient number, since it is larger than the sum of its proper divisors (1).

25205663012063 is an equidigital number, since it uses as much as digits as its factorization.

25205663012063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 25205663012063 in words is "twenty-five trillion, two hundred five billion, six hundred sixty-three million, twelve thousand, sixty-three".