25855631063 has 2 divisors, whose sum is σ = 25855631064. Its totient is φ = 25855631062.

The previous prime is 25855631017. The next prime is 25855631069. The reversal of 25855631063 is 36013655852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25855631063 - 2¹² = 25855626967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25855631069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12927815531 + 12927815532.

It is an arithmetic number, because the mean of its divisors is an integer number (12927815532).

Almost surely, 2^25855631063 is an apocalyptic number.

25855631063 is a deficient number, since it is larger than the sum of its proper divisors (1).

25855631063 is an equidigital number, since it uses as much as digits as its factorization.

25855631063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 25855631063 in words is "twenty-five billion, eight hundred fifty-five million, six hundred thirty-one thousand, sixty-three".