25955956159 has 24 divisors (see below), whose sum is σ = 32592900960. Its totient is φ = 20546817984.

The previous prime is 25955956127. The next prime is 25955956163. The reversal of 25955956159 is 95165955952.

It is a happy number.

It is not a de Polignac number, because 25955956159 - 2⁵ = 25955956127 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25955956097 and 25955956106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25955956759) 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 in 23 ways as a sum of consecutive naturals, for example, 364404 + ... + 429769.

It is an arithmetic number, because the mean of its divisors is an integer number (1358037540).

Almost surely, 2^25955956159 is an apocalyptic number.

25955956159 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

25955956159 is a deficient number, since it is larger than the sum of its proper divisors (6636944801).

25955956159 is a wasteful number, since it uses less digits than its factorization.

25955956159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794239 (or 794232 counting only the distinct ones).

The product of its digits is 27337500, while the sum is 61.

The spelling of 25955956159 in words is "twenty-five billion, nine hundred fifty-five million, nine hundred fifty-six thousand, one hundred fifty-nine".