18425568 has 72 divisors (see below), whose sum is σ = 56278152. Its totient is φ = 5263104.

The previous prime is 18425521. The next prime is 18425587. The reversal of 18425568 is 86552481.

It is a super-2 number, since 2×18425568² = 679003112245248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2746 + ... + 6662.

It is an arithmetic number, because the mean of its divisors is an integer number (781641).

Almost surely, 2^18425568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18425568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28139076).

18425568 is an abundant number, since it is smaller than the sum of its proper divisors (37852584).

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

18425568 is a wasteful number, since it uses less digits than its factorization.

18425568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944 (or 3929 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 18425568 is about 4292.5013686661. The cubic root of 18425568 is about 264.1234500694.

It can be divided in two parts, 184 and 25568, that added together give a palindrome (25752).

The spelling of 18425568 in words is "eighteen million, four hundred twenty-five thousand, five hundred sixty-eight".