18533125 has 20 divisors (see below), whose sum is σ = 24951388. Its totient is φ = 13680000.

The previous prime is 18533089. The next prime is 18533143. The reversal of 18533125 is 52133581.

It can be written as a sum of positive squares in 10 ways, for example, as 16265089 + 2268036 = 4033^2 + 1506^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18533125 is a prime.

It is a super-3 number, since 3×18533125³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18533093 and 18533102.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 6985 + ... + 9265.

Almost surely, 2^18533125 is an apocalyptic number.

It is an amenable number.

18533125 is a deficient number, since it is larger than the sum of its proper divisors (6418263).

18533125 is an equidigital number, since it uses as much as digits as its factorization.

18533125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314 (or 2299 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 18533125 is about 4305.0116143862. The cubic root of 18533125 is about 264.6363827467.

The spelling of 18533125 in words is "eighteen million, five hundred thirty-three thousand, one hundred twenty-five".