25863402959 has 2 divisors, whose sum is σ = 25863402960. Its totient is φ = 25863402958.

The previous prime is 25863402923. The next prime is 25863403001. The reversal of 25863402959 is 95920436852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25863402959 - 2²⁴ = 25846625743 is a prime.

It is a super-2 number, since 2×25863402959² (a number of 22 digits) contains 22 as substring.

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 25863402959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25863402919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12931701479 + 12931701480.

It is an arithmetic number, because the mean of its divisors is an integer number (12931701480).

Almost surely, 2^25863402959 is an apocalyptic number.

25863402959 is a deficient number, since it is larger than the sum of its proper divisors (1).

25863402959 is an equidigital number, since it uses as much as digits as its factorization.

25863402959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 25863402959 in words is "twenty-five billion, eight hundred sixty-three million, four hundred two thousand, nine hundred fifty-nine".