225442236 has 24 divisors (see below), whose sum is σ = 556975440. Its totient is φ = 70726912.

The previous prime is 225442229. The next prime is 225442237. The reversal of 225442236 is 632244522.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225442237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552351 + ... + 552758.

It is an arithmetic number, because the mean of its divisors is an integer number (23207310).

Almost surely, 2^225442236 is an apocalyptic number.

It is an amenable number.

225442236 is an abundant number, since it is smaller than the sum of its proper divisors (331533204).

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

225442236 is a wasteful number, since it uses less digits than its factorization.

225442236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105133 (or 1105131 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 225442236 is about 15014.7339636771. The cubic root of 225442236 is about 608.6184230185.

Adding to 225442236 its reverse (632244522), we get a palindrome (857686758).

The spelling of 225442236 in words is "two hundred twenty-five million, four hundred forty-two thousand, two hundred thirty-six".