12225492 has 60 divisors (see below), whose sum is σ = 32372340. Its totient is φ = 4022784.

The previous prime is 12225491. The next prime is 12225527. The reversal of 12225492 is 29452221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4137156 + 8088336 = 2034^2 + 2844^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31234 + ... + 31622.

It is an arithmetic number, because the mean of its divisors is an integer number (539539).

Almost surely, 2^12225492 is an apocalyptic number.

12225492 is a gapful number since it is divisible by the number (12) 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 12225492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16186170).

12225492 is an abundant number, since it is smaller than the sum of its proper divisors (20146848).

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

12225492 is a wasteful number, since it uses less digits than its factorization.

12225492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 491 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12225492 is about 3496.4971042459. The cubic root of 12225492 is about 230.3679805764.

The spelling of 12225492 in words is "twelve million, two hundred twenty-five thousand, four hundred ninety-two".