1225452226 has 4 divisors (see below), whose sum is σ = 1838178342. Its totient is φ = 612726112.

The previous prime is 1225452211. The next prime is 1225452281. The reversal of 1225452226 is 6222545221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 682515625 + 542936601 = 26125^2 + 23301^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 306363055 + ... + 306363058.

Almost surely, 2^1225452226 is an apocalyptic number.

1225452226 is a deficient number, since it is larger than the sum of its proper divisors (612726116).

1225452226 is an equidigital number, since it uses as much as digits as its factorization.

1225452226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612726115.

The product of its digits is 19200, while the sum is 31.

The square root of 1225452226 is about 35006.4597753043. The cubic root of 1225452226 is about 1070.1191313480.

Adding to 1225452226 its reverse (6222545221), we get a palindrome (7447997447).

The spelling of 1225452226 in words is "one billion, two hundred twenty-five million, four hundred fifty-two thousand, two hundred twenty-six".