225505522 has 48 divisors (see below), whose sum is σ = 383423040. Its totient is φ = 99364320.

The previous prime is 225505519. The next prime is 225505529.

225505522 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (225505529) 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, 2068804 + ... + 2068912.

It is an arithmetic number, because the mean of its divisors is an integer number (7987980).

Almost surely, 2^225505522 is an apocalyptic number.

225505522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225505522 is a deficient number, since it is larger than the sum of its proper divisors (157917518).

225505522 is a wasteful number, since it uses less digits than its factorization.

225505522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 225505522 is about 15016.8412790440. The cubic root of 225505522 is about 608.6753680148.

Adding to 225505522 its product of nonzero digits (10000), we get a palindrome (225515522).

The spelling of 225505522 in words is "two hundred twenty-five million, five hundred five thousand, five hundred twenty-two".