18125672 has 16 divisors (see below), whose sum is σ = 35985060. Its totient is φ = 8529664.

The previous prime is 18125659. The next prime is 18125687. The reversal of 18125672 is 27652181.

It can be written as a sum of positive squares in 2 ways, for example, as 17926756 + 198916 = 4234^2 + 446^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66503 + ... + 66774.

Almost surely, 2^18125672 is an apocalyptic number.

It is an amenable number.

18125672 is a deficient number, since it is larger than the sum of its proper divisors (17859388).

18125672 is a wasteful number, since it uses less digits than its factorization.

18125672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133300 (or 133296 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 18125672 is about 4257.4255131476. The cubic root of 18125672 is about 262.6826399395.

The spelling of 18125672 in words is "eighteen million, one hundred twenty-five thousand, six hundred seventy-two".