18333725 has 12 divisors (see below), whose sum is σ = 22796160. Its totient is φ = 14626800.

The previous prime is 18333709. The next prime is 18333739. The reversal of 18333725 is 52733381.

It is not a de Polignac number, because 18333725 - 2⁴ = 18333709 is a prime.

It is a super-2 number, since 2×18333725² = 672250944751250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18333691 and 18333700.

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 11 ways as a sum of consecutive naturals, for example, 11210 + ... + 12740.

It is an arithmetic number, because the mean of its divisors is an integer number (1899680).

Almost surely, 2^18333725 is an apocalyptic number.

It is an amenable number.

18333725 is a deficient number, since it is larger than the sum of its proper divisors (4462435).

18333725 is a wasteful number, since it uses less digits than its factorization.

18333725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020 (or 2015 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 18333725 is about 4281.7899294571. The cubic root of 18333725 is about 263.6838741709.

The spelling of 18333725 in words is "eighteen million, three hundred thirty-three thousand, seven hundred twenty-five".