82081388125 has 20 divisors (see below), whose sum is σ = 111893357664. Its totient is φ = 59695550000.

The previous prime is 82081388117. The next prime is 82081388131. The reversal of 82081388125 is 52188318028.

It is not a de Polignac number, because 82081388125 - 2³ = 82081388117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5962681 + ... + 5976430.

Almost surely, 2^82081388125 is an apocalyptic number.

It is an amenable number.

82081388125 is a deficient number, since it is larger than the sum of its proper divisors (29811969539).

82081388125 is a wasteful number, since it uses less digits than its factorization.

82081388125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11939142 (or 11939127 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 82081388125 in words is "eighty-two billion, eighty-one million, three hundred eighty-eight thousand, one hundred twenty-five".