18125204 has 24 divisors (see below), whose sum is σ = 32917248. Its totient is φ = 8723520.

The previous prime is 18125201. The next prime is 18125251. The reversal of 18125204 is 40252181.

It is a self number, because there is not a number n which added to its sum of digits gives 18125204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38579 + ... + 39045.

It is an arithmetic number, because the mean of its divisors is an integer number (1371552).

Almost surely, 2^18125204 is an apocalyptic number.

It is an amenable number.

18125204 is a deficient number, since it is larger than the sum of its proper divisors (14792044).

18125204 is a wasteful number, since it uses less digits than its factorization.

18125204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 18125204 is about 4257.3705499991. The cubic root of 18125204 is about 262.6803791216.

Adding to 18125204 its reverse (40252181), we get a palindrome (58377385).

The spelling of 18125204 in words is "eighteen million, one hundred twenty-five thousand, two hundred four".