1223344225 has 18 divisors (see below), whose sum is σ = 1611437474. Its totient is φ = 921100800.

The previous prime is 1223344201. The next prime is 1223344229. The reversal of 1223344225 is 5224433221.

It can be written as a sum of positive squares in 9 ways, for example, as 13417569 + 1209926656 = 3663^2 + 34784^2 .

It is not a de Polignac number, because 1223344225 - 2⁷ = 1223344097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223344193 and 1223344202.

It is not an unprimeable number, because it can be changed into a prime (1223344229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 77436 + ... + 91885.

Almost surely, 2^1223344225 is an apocalyptic number.

It is an amenable number.

1223344225 is a deficient number, since it is larger than the sum of its proper divisors (388093249).

1223344225 is a wasteful number, since it uses less digits than its factorization.

1223344225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169365 (or 169343 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 1223344225 is about 34976.3380730459. The cubic root of 1223344225 is about 1069.5051792472.

Adding to 1223344225 its reverse (5224433221), we get a palindrome (6447777446).

The spelling of 1223344225 in words is "one billion, two hundred twenty-three million, three hundred forty-four thousand, two hundred twenty-five".