18225865826 has 8 divisors (see below), whose sum is σ = 31244341440. Its totient is φ = 7811085348.

The previous prime is 18225865789. The next prime is 18225865841. The reversal of 18225865826 is 62856852281.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 650923766 + ... + 650923793.

It is an arithmetic number, because the mean of its divisors is an integer number (3905542680).

Almost surely, 2^18225865826 is an apocalyptic number.

18225865826 is a deficient number, since it is larger than the sum of its proper divisors (13018475614).

18225865826 is a wasteful number, since it uses less digits than its factorization.

18225865826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301847568.

The product of its digits is 3686400, while the sum is 53.

The spelling of 18225865826 in words is "eighteen billion, two hundred twenty-five million, eight hundred sixty-five thousand, eight hundred twenty-six".