243225612 has 288 divisors, whose sum is σ = 804384000. Its totient is φ = 63141120.

The previous prime is 243225601. The next prime is 243225617. The reversal of 243225612 is 216522342.

It is a happy number.

243225612 is a `hidden beast` number, since 2 + 43 + 2 + 2 + 5 + 612 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (243225617) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4122439 + ... + 4122497.

It is an arithmetic number, because the mean of its divisors is an integer number (2793000).

Almost surely, 2^243225612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243225612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402192000).

243225612 is an abundant number, since it is smaller than the sum of its proper divisors (561158388).

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

243225612 is a wasteful number, since it uses less digits than its factorization.

243225612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 131 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 243225612 is about 15595.6920974992. The cubic root of 243225612 is about 624.2182114050.

Adding to 243225612 its reverse (216522342), we get a palindrome (459747954).

The spelling of 243225612 in words is "two hundred forty-three million, two hundred twenty-five thousand, six hundred twelve".