18425208 has 64 divisors (see below), whose sum is σ = 49766400. Its totient is φ = 5667200.

The previous prime is 18425207. The next prime is 18425221. The reversal of 18425208 is 80252481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18425203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15433 + ... + 16583.

It is an arithmetic number, because the mean of its divisors is an integer number (777600).

Almost surely, 2^18425208 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 18425208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24883200).

18425208 is an abundant number, since it is smaller than the sum of its proper divisors (31341192).

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

18425208 is a wasteful number, since it uses less digits than its factorization.

18425208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 18425208 is about 4292.4594348695. The cubic root of 18425208 is about 264.1217299042.

Adding to 18425208 its reverse (80252481), we get a palindrome (98677689).

The spelling of 18425208 in words is "eighteen million, four hundred twenty-five thousand, two hundred eight".