3221225473 has 2 divisors, whose sum is σ = 3221225474. Its totient is φ = 3221225472.

The previous prime is 3221225461. The next prime is 3221225479. The reversal of 3221225473 is 3745221223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2463434689 + 757790784 = 49633^2 + 27528^2 .

It is an emirp because it is prime and its reverse (3745221223) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221225473 is a prime.

It is not a weakly prime, because it can be changed into another prime (3221225479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a Pierpont prime, being equal to 2³⁰ ⋅ 3¹ + 1.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610612736 + 1610612737.

It is an arithmetic number, because the mean of its divisors is an integer number (1610612737).

It is a Proth number, since it is equal to 3 ⋅ 2³⁰ + 1 and 3 < 2³⁰.

Almost surely, 2^3221225473 is an apocalyptic number.

It is an amenable number.

3221225473 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221225473 is an equidigital number, since it uses as much as digits as its factorization.

3221225473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 3221225473 is about 56755.8408712266. The cubic root of 3221225473 is about 1476.8635601476.

Adding to 3221225473 its reverse (3745221223), we get a palindrome (6966446696).

The spelling of 3221225473 in words is "three billion, two hundred twenty-one million, two hundred twenty-five thousand, four hundred seventy-three".