18418325 has 12 divisors (see below), whose sum is σ = 23227680. Its totient is φ = 14483760.

The previous prime is 18418303. The next prime is 18418339. The reversal of 18418325 is 52381481.

It is not a de Polignac number, because 18418325 - 2⁶ = 18418261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18418291 and 18418300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4769 + ... + 7718.

It is an arithmetic number, because the mean of its divisors is an integer number (1935640).

Almost surely, 2^18418325 is an apocalyptic number.

It is an amenable number.

18418325 is a deficient number, since it is larger than the sum of its proper divisors (4809355).

18418325 is a wasteful number, since it uses less digits than its factorization.

18418325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12556 (or 12551 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 18418325 is about 4291.6576051684. The cubic root of 18418325 is about 264.0888369912.

The spelling of 18418325 in words is "eighteen million, four hundred eighteen thousand, three hundred twenty-five".