18022425 has 24 divisors (see below), whose sum is σ = 30099264. Its totient is φ = 9514560.

The previous prime is 18022399. The next prime is 18022429. The reversal of 18022425 is 52422081.

It is not a de Polignac number, because 18022425 - 2⁷ = 18022297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18022395 and 18022404.

It is not an unprimeable number, because it can be changed into a prime (18022429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6559 + ... + 8891.

It is an arithmetic number, because the mean of its divisors is an integer number (1254136).

Almost surely, 2^18022425 is an apocalyptic number.

18022425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18022425 is a deficient number, since it is larger than the sum of its proper divisors (12076839).

18022425 is a wasteful number, since it uses less digits than its factorization.

18022425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 18022425 is about 4245.2826761006. The cubic root of 18022425 is about 262.1829278222.

The spelling of 18022425 in words is "eighteen million, twenty-two thousand, four hundred twenty-five".