12225558 has 16 divisors (see below), whose sum is σ = 25514496. Its totient is φ = 3897960.

The previous prime is 12225553. The next prime is 12225611. The reversal of 12225558 is 85552221.

It is a super-3 number, since 3×12225558³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225553) by changing a digit.

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, 44158 + ... + 44433.

It is an arithmetic number, because the mean of its divisors is an integer number (1594656).

Almost surely, 2^12225558 is an apocalyptic number.

12225558 is an abundant number, since it is smaller than the sum of its proper divisors (13288938).

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

12225558 is a wasteful number, since it uses less digits than its factorization.

12225558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88619.

The product of its digits is 8000, while the sum is 30.

The square root of 12225558 is about 3496.5065422504. The cubic root of 12225558 is about 230.3683951271.

Adding to 12225558 its reverse (85552221), we get a palindrome (97777779).

The spelling of 12225558 in words is "twelve million, two hundred twenty-five thousand, five hundred fifty-eight".