25863533863 has 2 divisors, whose sum is σ = 25863533864. Its totient is φ = 25863533862.

The previous prime is 25863533827. The next prime is 25863533923. The reversal of 25863533863 is 36833536852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25863533863 - 2⁹ = 25863533351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25863533863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25863533963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12931766931 + 12931766932.

It is an arithmetic number, because the mean of its divisors is an integer number (12931766932).

Almost surely, 2^25863533863 is an apocalyptic number.

25863533863 is a deficient number, since it is larger than the sum of its proper divisors (1).

25863533863 is an equidigital number, since it uses as much as digits as its factorization.

25863533863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 52.

The spelling of 25863533863 in words is "twenty-five billion, eight hundred sixty-three million, five hundred thirty-three thousand, eight hundred sixty-three".