18125572 has 12 divisors (see below), whose sum is σ = 31750236. Its totient is φ = 9054080.

The previous prime is 18125543. The next prime is 18125573. The reversal of 18125572 is 27552181.

It can be written as a sum of positive squares in 2 ways, for example, as 7974976 + 10150596 = 2824^2 + 3186^2 .

It is not an unprimeable number, because it can be changed into a prime (18125573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5568 + ... + 8200.

It is an arithmetic number, because the mean of its divisors is an integer number (2645853).

Almost surely, 2^18125572 is an apocalyptic number.

It is an amenable number.

18125572 is a deficient number, since it is larger than the sum of its proper divisors (13624664).

18125572 is a wasteful number, since it uses less digits than its factorization.

18125572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358 (or 4356 counting only the distinct ones).

The product of its digits is 5600, while the sum is 31.

The square root of 18125572 is about 4257.4137689447. The cubic root of 18125572 is about 262.6821568620.

The spelling of 18125572 in words is "eighteen million, one hundred twenty-five thousand, five hundred seventy-two".