1223422225 has 12 divisors (see below), whose sum is σ = 1518465436. Its totient is φ = 977820480.

The previous prime is 1223422199. The next prime is 1223422309. The reversal of 1223422225 is 5222243221.

It can be written as a sum of positive squares in 6 ways, for example, as 93857344 + 1129564881 = 9688^2 + 33609^2 .

It is not a de Polignac number, because 1223422225 - 2⁷ = 1223422097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223422225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4939 + ... + 49711.

Almost surely, 2^1223422225 is an apocalyptic number.

It is an amenable number.

1223422225 is a deficient number, since it is larger than the sum of its proper divisors (295043211).

1223422225 is a wasteful number, since it uses less digits than its factorization.

1223422225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45876 (or 45871 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 1223422225 is about 34977.4530948152. The cubic root of 1223422225 is about 1069.5279091896.

Adding to 1223422225 its reverse (5222243221), we get a palindrome (6445665446).

The spelling of 1223422225 in words is "one billion, two hundred twenty-three million, four hundred twenty-two thousand, two hundred twenty-five".