12225528 has 96 divisors (see below), whose sum is σ = 38338560. Its totient is φ = 3447360.

The previous prime is 12225527. The next prime is 12225553. The reversal of 12225528 is 82552221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63913 + ... + 64103.

It is an arithmetic number, because the mean of its divisors is an integer number (399360).

Almost surely, 2^12225528 is an apocalyptic number.

12225528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12225528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19169280).

12225528 is an abundant number, since it is smaller than the sum of its proper divisors (26113032).

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

12225528 is a wasteful number, since it uses less digits than its factorization.

12225528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 330 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 12225528 is about 3496.5022522515. The cubic root of 12225528 is about 230.3682066952.

Adding to 12225528 its reverse (82552221), we get a palindrome (94777749).

The spelling of 12225528 in words is "twelve million, two hundred twenty-five thousand, five hundred twenty-eight".