25935281982 has 24 divisors (see below), whose sum is σ = 56199415896. Its totient is φ = 8644124016.

The previous prime is 25935281971. The next prime is 25935281989. The reversal of 25935281982 is 28918253952.

It is a happy number.

25935281982 is a `hidden beast` number, since 25 + 9 + 3 + 528 + 1 + 98 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25935281989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94308 + ... + 246504.

It is an arithmetic number, because the mean of its divisors is an integer number (2341642329).

Almost surely, 2^25935281982 is an apocalyptic number.

25935281982 is an abundant number, since it is smaller than the sum of its proper divisors (30264133914).

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

25935281982 is a wasteful number, since it uses less digits than its factorization.

25935281982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161672 (or 161669 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 25935281982 in words is "twenty-five billion, nine hundred thirty-five million, two hundred eighty-one thousand, nine hundred eighty-two".