18523325 has 12 divisors (see below), whose sum is σ = 23504448. Its totient is φ = 14473200.

The previous prime is 18523313. The next prime is 18523333. The reversal of 18523325 is 52332581.

It is not a de Polignac number, because 18523325 - 2⁸ = 18523069 is a prime.

It is a super-2 number, since 2×18523325² = 686227138111250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7541 + ... + 9690.

It is an arithmetic number, because the mean of its divisors is an integer number (1958704).

Almost surely, 2^18523325 is an apocalyptic number.

It is an amenable number.

18523325 is a deficient number, since it is larger than the sum of its proper divisors (4981123).

18523325 is a wasteful number, since it uses less digits than its factorization.

18523325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17284 (or 17279 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 18523325 is about 4303.8732555688. The cubic root of 18523325 is about 264.5897294559.

The spelling of 18523325 in words is "eighteen million, five hundred twenty-three thousand, three hundred twenty-five".