18422425 has 36 divisors (see below), whose sum is σ = 27428800. Its totient is φ = 12022560.

The previous prime is 18422389. The next prime is 18422479. The reversal of 18422425 is 52422481.

It is not a de Polignac number, because 18422425 - 2¹⁷ = 18291353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18422393 and 18422402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 92476 + ... + 92674.

Almost surely, 2^18422425 is an apocalyptic number.

It is an amenable number.

18422425 is a deficient number, since it is larger than the sum of its proper divisors (9006375).

18422425 is a wasteful number, since it uses less digits than its factorization.

18422425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 234 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 18422425 is about 4292.1352495000. The cubic root of 18422425 is about 264.1084313155.

The spelling of 18422425 in words is "eighteen million, four hundred twenty-two thousand, four hundred twenty-five".