18243325 has 24 divisors (see below), whose sum is σ = 24056000. Its totient is φ = 13685760.

The previous prime is 18243293. The next prime is 18243343. The reversal of 18243325 is 52334281.

It is not a de Polignac number, because 18243325 - 2⁵ = 18243293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18243293 and 18243302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91576 + ... + 91774.

Almost surely, 2^18243325 is an apocalyptic number.

It is an amenable number.

18243325 is a deficient number, since it is larger than the sum of its proper divisors (5812675).

18243325 is a wasteful number, since it uses less digits than its factorization.

18243325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 416 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 18243325 is about 4271.2205515520. The cubic root of 18243325 is about 263.2497687457.

The spelling of 18243325 in words is "eighteen million, two hundred forty-three thousand, three hundred twenty-five".