18144292225 has 12 divisors (see below), whose sum is σ = 22500935344. Its totient is φ = 14514135120.

The previous prime is 18144292217. The next prime is 18144292289. The reversal of 18144292225 is 52229244181.

It is not a de Polignac number, because 18144292225 - 2³ = 18144292217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333382 + ... + 383968.

Almost surely, 2^18144292225 is an apocalyptic number.

It is an amenable number.

18144292225 is a deficient number, since it is larger than the sum of its proper divisors (4356643119).

18144292225 is a wasteful number, since it uses less digits than its factorization.

18144292225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64944 (or 64939 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The spelling of 18144292225 in words is "eighteen billion, one hundred forty-four million, two hundred ninety-two thousand, two hundred twenty-five".