2268221225 has 12 divisors (see below), whose sum is σ = 2909581260. Its totient is φ = 1752004800.

The previous prime is 2268221177. The next prime is 2268221251. The reversal of 2268221225 is 5221228622.

It can be written as a sum of positive squares in 6 ways, for example, as 290907136 + 1977314089 = 17056^2 + 44467^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2268221225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2268221191 and 2268221200.

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, 1563566 + ... + 1565015.

It is an arithmetic number, because the mean of its divisors is an integer number (242465105).

Almost surely, 2^2268221225 is an apocalyptic number.

2268221225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2268221225 is a deficient number, since it is larger than the sum of its proper divisors (641360035).

2268221225 is a wasteful number, since it uses less digits than its factorization.

2268221225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128620 (or 3128615 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 2268221225 is about 47625.8461867083. The cubic root of 2268221225 is about 1313.8984592336.

Adding to 2268221225 its reverse (5221228622), we get a palindrome (7489449847).

The spelling of 2268221225 in words is "two billion, two hundred sixty-eight million, two hundred twenty-one thousand, two hundred twenty-five".