18086166425 has 12 divisors (see below), whose sum is σ = 22480384080. Its totient is φ = 14434392720.

The previous prime is 18086166421. The next prime is 18086166437. The reversal of 18086166425 is 52466168081.

It is not a de Polignac number, because 18086166425 - 2² = 18086166421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18086166425.

It is not an unprimeable number, because it can be changed into a prime (18086166421) 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, 852827 + ... + 873776.

It is an arithmetic number, because the mean of its divisors is an integer number (1873365340).

Almost surely, 2^18086166425 is an apocalyptic number.

It is an amenable number.

18086166425 is a deficient number, since it is larger than the sum of its proper divisors (4394217655).

18086166425 is a wasteful number, since it uses less digits than its factorization.

18086166425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727032 (or 1727027 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 18086166425 in words is "eighteen billion, eighty-six million, one hundred sixty-six thousand, four hundred twenty-five".