25981695330 has 64 divisors (see below), whose sum is σ = 62806071168. Its totient is φ = 6878568960.

The previous prime is 25981695287. The next prime is 25981695343. The reversal of 25981695330 is 3359618952.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4081350 + ... + 4087710.

It is an arithmetic number, because the mean of its divisors is an integer number (981344862).

Almost surely, 2^25981695330 is an apocalyptic number.

25981695330 is an abundant number, since it is smaller than the sum of its proper divisors (36824375838).

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

25981695330 is a wasteful number, since it uses less digits than its factorization.

25981695330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The spelling of 25981695330 in words is "twenty-five billion, nine hundred eighty-one million, six hundred ninety-five thousand, three hundred thirty".