25981895910 has 16 divisors (see below), whose sum is σ = 62356550256. Its totient is φ = 6928505568.

The previous prime is 25981895887. The next prime is 25981895941. The reversal of 25981895910 is 1959818952.

It is a congruent number.

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, 433031569 + ... + 433031628.

It is an arithmetic number, because the mean of its divisors is an integer number (3897284391).

Almost surely, 2^25981895910 is an apocalyptic number.

25981895910 is an abundant number, since it is smaller than the sum of its proper divisors (36374654346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25981895910 is a wasteful number, since it uses less digits than its factorization.

25981895910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866063207.

The product of its (nonzero) digits is 2332800, while the sum is 57.

The spelling of 25981895910 in words is "twenty-five billion, nine hundred eighty-one million, eight hundred ninety-five thousand, nine hundred ten".