2220404225 has 24 divisors (see below), whose sum is σ = 3045247800. Its totient is φ = 1595358720.

The previous prime is 2220404203. The next prime is 2220404231. The reversal of 2220404225 is 5224040222.

It can be written as a sum of positive squares in 12 ways, for example, as 480179569 + 1740224656 = 21913^2 + 41716^2 .

It is not a de Polignac number, because 2220404225 - 2⁶ = 2220404161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220404225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80300 + ... + 104349.

It is an arithmetic number, because the mean of its divisors is an integer number (126885325).

Almost surely, 2^2220404225 is an apocalyptic number.

2220404225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2220404225 is a deficient number, since it is larger than the sum of its proper divisors (824843575).

2220404225 is a wasteful number, since it uses less digits than its factorization.

2220404225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184709 (or 184704 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 2220404225 is about 47121.1653612259. The cubic root of 2220404225 is about 1304.5999223775.

Adding to 2220404225 its reverse (5224040222), we get a palindrome (7444444447).

The spelling of 2220404225 in words is "two billion, two hundred twenty million, four hundred four thousand, two hundred twenty-five".