25641082108 has 12 divisors (see below), whose sum is σ = 45632434680. Its totient is φ = 12603243632.

The previous prime is 25641082091. The next prime is 25641082109. The reversal of 25641082108 is 80128014652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25641082109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54324091 + ... + 54324562.

It is an arithmetic number, because the mean of its divisors is an integer number (3802702890).

Almost surely, 2^25641082108 is an apocalyptic number.

It is an amenable number.

25641082108 is a deficient number, since it is larger than the sum of its proper divisors (19991352572).

25641082108 is a wasteful number, since it uses less digits than its factorization.

25641082108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108648716 (or 108648714 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 25641082108 in words is "twenty-five billion, six hundred forty-one million, eighty-two thousand, one hundred eight".