25676721608 has 32 divisors (see below), whose sum is σ = 48509314560. Its totient is φ = 12741150720.

The previous prime is 25676721583. The next prime is 25676721641. The reversal of 25676721608 is 80612767652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841385 + ... + 871367.

It is an arithmetic number, because the mean of its divisors is an integer number (1515916080).

Almost surely, 2^25676721608 is an apocalyptic number.

It is an amenable number.

25676721608 is a deficient number, since it is larger than the sum of its proper divisors (22832592952).

25676721608 is a wasteful number, since it uses less digits than its factorization.

25676721608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30797 (or 30793 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 25676721608 in words is "twenty-five billion, six hundred seventy-six million, seven hundred twenty-one thousand, six hundred eight".