18043925 has 12 divisors (see below), whose sum is σ = 22456896. Its totient is φ = 14382000.

The previous prime is 18043913. The next prime is 18043931. The reversal of 18043925 is 52934081.

It is not a de Polignac number, because 18043925 - 2¹⁸ = 17781781 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 18043891 and 18043900.

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, 6500 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (1871408).

Almost surely, 2^18043925 is an apocalyptic number.

It is an amenable number.

18043925 is a deficient number, since it is larger than the sum of its proper divisors (4412971).

18043925 is a wasteful number, since it uses less digits than its factorization.

18043925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668 (or 2663 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 18043925 is about 4247.8141437685. The cubic root of 18043925 is about 262.2871441507.

The spelling of 18043925 in words is "eighteen million, forty-three thousand, nine hundred twenty-five".