18225606 has 16 divisors (see below), whose sum is σ = 41658624. Its totient is φ = 5207304.

The previous prime is 18225589. The next prime is 18225611. The reversal of 18225606 is 60652281.

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 7 ways as a sum of consecutive naturals, for example, 216930 + ... + 217013.

It is an arithmetic number, because the mean of its divisors is an integer number (2603664).

Almost surely, 2^18225606 is an apocalyptic number.

18225606 is an abundant number, since it is smaller than the sum of its proper divisors (23433018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18225606 is a wasteful number, since it uses less digits than its factorization.

18225606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433955.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 18225606 is about 4269.1458162026. The cubic root of 18225606 is about 263.1645132048.

Adding to 18225606 its reverse (60652281), we get a palindrome (78877887).

The spelling of 18225606 in words is "eighteen million, two hundred twenty-five thousand, six hundred six".