4443221225 has 12 divisors (see below), whose sum is σ = 5699581260. Its totient is φ = 3432004800.

The previous prime is 4443221197. The next prime is 4443221243. The reversal of 4443221225 is 5221223444.

It can be written as a sum of positive squares in 6 ways, for example, as 978250729 + 3464970496 = 31277^2 + 58864^2 .

It is not a de Polignac number, because 4443221225 - 2¹⁴ = 4443204841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 3063566 + ... + 3065015.

It is an arithmetic number, because the mean of its divisors is an integer number (474965105).

Almost surely, 2^4443221225 is an apocalyptic number.

It is an amenable number.

4443221225 is a deficient number, since it is larger than the sum of its proper divisors (1256360035).

4443221225 is a wasteful number, since it uses less digits than its factorization.

4443221225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6128620 (or 6128615 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

The square root of 4443221225 is about 66657.4918895093. The cubic root of 4443221225 is about 1643.9905331188.

Adding to 4443221225 its reverse (5221223444), we get a palindrome (9664444669).

The spelling of 4443221225 in words is "four billion, four hundred forty-three million, two hundred twenty-one thousand, two hundred twenty-five".