18943725 has 12 divisors (see below), whose sum is σ = 31320416. Its totient is φ = 10103280.

The previous prime is 18943669. The next prime is 18943747. The reversal of 18943725 is 52734981.

It is not a de Polignac number, because 18943725 - 2⁸ = 18943469 is a prime.

It is a Duffinian number.

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, 126217 + ... + 126366.

Almost surely, 2^18943725 is an apocalyptic number.

18943725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18943725 is a deficient number, since it is larger than the sum of its proper divisors (12376691).

18943725 is a wasteful number, since it uses less digits than its factorization.

18943725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252596 (or 252591 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 18943725 is about 4352.4389714274. The cubic root of 18943725 is about 266.5764582028.

The spelling of 18943725 in words is "eighteen million, nine hundred forty-three thousand, seven hundred twenty-five".