18045525 has 12 divisors (see below), whose sum is σ = 29835392. Its totient is φ = 9624240.

The previous prime is 18045491. The next prime is 18045541. The reversal of 18045525 is 52554081.

It is not a de Polignac number, because 18045525 - 2²³ = 9656917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18045492 and 18045501.

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, 120229 + ... + 120378.

Almost surely, 2^18045525 is an apocalyptic number.

18045525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18045525 is a deficient number, since it is larger than the sum of its proper divisors (11789867).

18045525 is a wasteful number, since it uses less digits than its factorization.

18045525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240620 (or 240615 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 18045525 is about 4248.0024717507. The cubic root of 18045525 is about 262.2948964741.

The spelling of 18045525 in words is "eighteen million, forty-five thousand, five hundred twenty-five".