18343725 has 12 divisors (see below), whose sum is σ = 30328416. Its totient is φ = 9783280.

The previous prime is 18343711. The next prime is 18343733. The reversal of 18343725 is 52734381.

It is not a de Polignac number, because 18343725 - 2⁵ = 18343693 is a prime.

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, 122217 + ... + 122366.

It is an arithmetic number, because the mean of its divisors is an integer number (2527368).

Almost surely, 2^18343725 is an apocalyptic number.

18343725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18343725 is a deficient number, since it is larger than the sum of its proper divisors (11984691).

18343725 is a wasteful number, since it uses less digits than its factorization.

18343725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244596 (or 244591 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 18343725 is about 4282.9575062099. The cubic root of 18343725 is about 263.7318069555.

The spelling of 18343725 in words is "eighteen million, three hundred forty-three thousand, seven hundred twenty-five".