18995725 has 48 divisors (see below), whose sum is σ = 29462400. Its totient is φ = 11854080.

The previous prime is 18995719. The next prime is 18995729. The reversal of 18995725 is 52759981.

It is not a de Polignac number, because 18995725 - 2⁷ = 18995597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18995729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96327 + ... + 96523.

It is an arithmetic number, because the mean of its divisors is an integer number (613800).

Almost surely, 2^18995725 is an apocalyptic number.

It is an amenable number.

18995725 is a deficient number, since it is larger than the sum of its proper divisors (10466675).

18995725 is a wasteful number, since it uses less digits than its factorization.

18995725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 257 counting only the distinct ones).

The product of its digits is 226800, while the sum is 46.

The square root of 18995725 is about 4358.4085398228. The cubic root of 18995725 is about 266.8201503587.

The spelling of 18995725 in words is "eighteen million, nine hundred ninety-five thousand, seven hundred twenty-five".