18443125 has 20 divisors (see below), whose sum is σ = 24067296. Its totient is φ = 14102000.

The previous prime is 18443111. The next prime is 18443137. The reversal of 18443125 is 52134481.

It is not a de Polignac number, because 18443125 - 2⁵ = 18443093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18443093 and 18443102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13734 + ... + 15016.

Almost surely, 2^18443125 is an apocalyptic number.

It is an amenable number.

18443125 is a deficient number, since it is larger than the sum of its proper divisors (5624171).

18443125 is an equidigital number, since it uses as much as digits as its factorization.

18443125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1311 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 18443125 is about 4294.5459597028. The cubic root of 18443125 is about 264.2073143916.

The spelling of 18443125 in words is "eighteen million, four hundred forty-three thousand, one hundred twenty-five".