25676410991 has 32 divisors (see below), whose sum is σ = 33081371136. Its totient is φ = 19348560000.

The previous prime is 25676410987. The next prime is 25676410993. The reversal of 25676410991 is 19901467652.

It is not a de Polignac number, because 25676410991 - 2² = 25676410987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25676410993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296021 + ... + 372801.

It is an arithmetic number, because the mean of its divisors is an integer number (1033792848).

Almost surely, 2^25676410991 is an apocalyptic number.

25676410991 is a deficient number, since it is larger than the sum of its proper divisors (7404960145).

25676410991 is a wasteful number, since it uses less digits than its factorization.

25676410991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76943.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 25676410991 in words is "twenty-five billion, six hundred seventy-six million, four hundred ten thousand, nine hundred ninety-one".