223444225 has 6 divisors (see below), whose sum is σ = 277070870. Its totient is φ = 178755360.

The previous prime is 223444189. The next prime is 223444229. The reversal of 223444225 is 522444322.

It can be written as a sum of positive squares in 3 ways, for example, as 1521 + 223442704 = 39^2 + 14948^2 .

It is not a de Polignac number, because 223444225 - 2⁷ = 223444097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223444193 and 223444202.

It is not an unprimeable number, because it can be changed into a prime (223444229) 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 5 ways as a sum of consecutive naturals, for example, 4468860 + ... + 4468909.

Almost surely, 2^223444225 is an apocalyptic number.

223444225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223444225 is a deficient number, since it is larger than the sum of its proper divisors (53626645).

223444225 is an equidigital number, since it uses as much as digits as its factorization.

223444225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8937779 (or 8937774 counting only the distinct ones).

The product of its digits is 15360, while the sum is 28.

The square root of 223444225 is about 14948.0508762848. The cubic root of 223444225 is about 606.8150985609.

Adding to 223444225 its reverse (522444322), we get a palindrome (745888547).

It can be divided in two parts, 22344 and 4225, that added together give a square (26569 = 163²).

The spelling of 223444225 in words is "two hundred twenty-three million, four hundred forty-four thousand, two hundred twenty-five".