12225552 has 20 divisors (see below), whose sum is σ = 31582800. Its totient is φ = 4075168.

The previous prime is 12225527. The next prime is 12225553. The reversal of 12225552 is 25552221.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127302 + ... + 127397.

It is an arithmetic number, because the mean of its divisors is an integer number (1579140).

Almost surely, 2^12225552 is an apocalyptic number.

12225552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12225552 is an abundant number, since it is smaller than the sum of its proper divisors (19357248).

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

12225552 is a wasteful number, since it uses less digits than its factorization.

12225552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254710 (or 254704 counting only the distinct ones).

The product of its digits is 2000, while the sum is 24.

The square root of 12225552 is about 3496.5056842511. The cubic root of 12225552 is about 230.3683574408.

Adding to 12225552 its reverse (25552221), we get a palindrome (37777773).

The spelling of 12225552 in words is "twelve million, two hundred twenty-five thousand, five hundred fifty-two".