18043025 has 72 divisors (see below), whose sum is σ = 30873024. Its totient is φ = 10281600.

The previous prime is 18043019. The next prime is 18043057. The reversal of 18043025 is 52034081.

It is not a de Polignac number, because 18043025 - 2⁴ = 18043009 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 175124 + ... + 175226.

It is an arithmetic number, because the mean of its divisors is an integer number (428792).

Almost surely, 2^18043025 is an apocalyptic number.

It is an amenable number.

18043025 is a deficient number, since it is larger than the sum of its proper divisors (12829999).

18043025 is a wasteful number, since it uses less digits than its factorization.

18043025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 18043025 is about 4247.7082056092. The cubic root of 18043025 is about 262.2827832674.

The spelling of 18043025 in words is "eighteen million, forty-three thousand, twenty-five".