18525572 has 12 divisors (see below), whose sum is σ = 34913676. Its totient is φ = 8550240.

The previous prime is 18525571. The next prime is 18525581. The reversal of 18525572 is 27552581.

It can be written as a sum of positive squares in 2 ways, for example, as 2637376 + 15888196 = 1624^2 + 3986^2 .

It is not an unprimeable number, because it can be changed into a prime (18525571) 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 3 ways as a sum of consecutive naturals, for example, 178079 + ... + 178182.

It is an arithmetic number, because the mean of its divisors is an integer number (2909473).

Almost surely, 2^18525572 is an apocalyptic number.

It is an amenable number.

18525572 is a deficient number, since it is larger than the sum of its proper divisors (16388104).

18525572 is a wasteful number, since it uses less digits than its factorization.

18525572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356278 (or 356276 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 18525572 is about 4304.1342915852. The cubic root of 18525572 is about 264.6004278427.

The spelling of 18525572 in words is "eighteen million, five hundred twenty-five thousand, five hundred seventy-two".