18441822225 has 48 divisors (see below), whose sum is σ = 31016300544. Its totient is φ = 9666888000.

The previous prime is 18441822209. The next prime is 18441822277. The reversal of 18441822225 is 52222814481.

It is a happy number.

It is not a de Polignac number, because 18441822225 - 2⁴ = 18441822209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1757344 + ... + 1767806.

It is an arithmetic number, because the mean of its divisors is an integer number (646172928).

Almost surely, 2^18441822225 is an apocalyptic number.

18441822225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18441822225 is a deficient number, since it is larger than the sum of its proper divisors (12574478319).

18441822225 is a wasteful number, since it uses less digits than its factorization.

18441822225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10878 (or 10873 counting only the distinct ones).

The product of its digits is 81920, while the sum is 39.

The spelling of 18441822225 in words is "eighteen billion, four hundred forty-one million, eight hundred twenty-two thousand, two hundred twenty-five".