1225244473 has 2 divisors, whose sum is σ = 1225244474. Its totient is φ = 1225244472.

The previous prime is 1225244437. The next prime is 1225244479. The reversal of 1225244473 is 3744425221.

Together with previous prime (1225244437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1199721769 + 25522704 = 34637^2 + 5052^2 .

It is an emirp because it is prime and its reverse (3744425221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1225244473 - 2⁹ = 1225243961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225244479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612622236 + 612622237.

It is an arithmetic number, because the mean of its divisors is an integer number (612622237).

Almost surely, 2^1225244473 is an apocalyptic number.

It is an amenable number.

1225244473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225244473 is an equidigital number, since it uses as much as digits as its factorization.

1225244473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 34.

The square root of 1225244473 is about 35003.4922971980. The cubic root of 1225244473 is about 1070.0586548916.

Adding to 1225244473 its reverse (3744425221), we get a palindrome (4969669694).

The spelling of 1225244473 in words is "one billion, two hundred twenty-five million, two hundred forty-four thousand, four hundred seventy-three".