25797459686 has 16 divisors (see below), whose sum is σ = 40383304704. Its totient is φ = 12336487944.

The previous prime is 25797459673. The next prime is 25797459697. The reversal of 25797459686 is 68695479752.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 444971 + ... + 499593.

It is an arithmetic number, because the mean of its divisors is an integer number (2523956544).

Almost surely, 2^25797459686 is an apocalyptic number.

25797459686 is a deficient number, since it is larger than the sum of its proper divisors (14585845018).

25797459686 is a wasteful number, since it uses less digits than its factorization.

25797459686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64915.

The product of its digits is 228614400, while the sum is 68.

The spelling of 25797459686 in words is "twenty-five billion, seven hundred ninety-seven million, four hundred fifty-nine thousand, six hundred eighty-six".