225544242 has 48 divisors (see below), whose sum is σ = 566669376. Its totient is φ = 58581600.

The previous prime is 225544181. The next prime is 225544243. The reversal of 225544242 is 242445522.

It is not an unprimeable number, because it can be changed into a prime (225544243) 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, 17109 + ... + 27272.

It is an arithmetic number, because the mean of its divisors is an integer number (11805612).

Almost surely, 2^225544242 is an apocalyptic number.

225544242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225544242 is an abundant number, since it is smaller than the sum of its proper divisors (341125134).

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

225544242 is a wasteful number, since it uses less digits than its factorization.

225544242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44415 (or 44404 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 225544242 is about 15018.1304429013. The cubic root of 225544242 is about 608.7102031729.

Adding to 225544242 its reverse (242445522), we get a palindrome (467989764).

It can be divided in two parts, 22554 and 4242, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 225544242 in words is "two hundred twenty-five million, five hundred forty-four thousand, two hundred forty-two".