18425668 has 48 divisors (see below), whose sum is σ = 36126720. Its totient is φ = 8182944.

The previous prime is 18425647. The next prime is 18425669. The reversal of 18425668 is 86652481.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

Its product of digits (92160) is a multiple of the sum of its prime factors (256).

It is a self number, because there is not a number n which added to its sum of digits gives 18425668.

It is not an unprimeable number, because it can be changed into a prime (18425669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145021 + ... + 145147.

It is an arithmetic number, because the mean of its divisors is an integer number (752640).

Almost surely, 2^18425668 is an apocalyptic number.

It is an amenable number.

18425668 is a deficient number, since it is larger than the sum of its proper divisors (17701052).

18425668 is a wasteful number, since it uses less digits than its factorization.

18425668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 18425668 is about 4292.5130168702. The cubic root of 18425668 is about 264.1239278890.

It can be divided in two parts, 184 and 25668, that added together give a palindrome (25852).

The spelling of 18425668 in words is "eighteen million, four hundred twenty-five thousand, six hundred sixty-eight".