18530569225 has 12 divisors (see below), whose sum is σ = 26260464064. Its totient is φ = 12706675920.

The previous prime is 18530569201. The next prime is 18530569231. The reversal of 18530569225 is 52296503581.

It is not a de Polignac number, because 18530569225 - 2¹¹ = 18530567177 is a prime.

It is a Duffinian 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, 52944309 + ... + 52944658.

Almost surely, 2^18530569225 is an apocalyptic number.

It is an amenable number.

18530569225 is a deficient number, since it is larger than the sum of its proper divisors (7729894839).

18530569225 is a wasteful number, since it uses less digits than its factorization.

18530569225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105888984 (or 105888979 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 18530569225 in words is "eighteen billion, five hundred thirty million, five hundred sixty-nine thousand, two hundred twenty-five".