1222502225 has 18 divisors (see below), whose sum is σ = 1763398854. Its totient is φ = 838286400.

The previous prime is 1222502213. The next prime is 1222502231. The reversal of 1222502225 is 5222052221.

1222502225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 12645136 + 1209857089 = 3556^2 + 34783^2 .

It is not a de Polignac number, because 1222502225 - 2¹² = 1222498129 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222502225.

It is an unprimeable number.

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 in 17 ways as a sum of consecutive naturals, for example, 497756 + ... + 500205.

It is an arithmetic number, because the mean of its divisors is an integer number (97966603).

Almost surely, 2^1222502225 is an apocalyptic number.

It is an amenable number.

1222502225 is a deficient number, since it is larger than the sum of its proper divisors (540896629).

1222502225 is an equidigital number, since it uses as much as digits as its factorization.

1222502225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997985 (or 997973 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1222502225 is about 34964.2992922781. The cubic root of 1222502225 is about 1069.2597509029.

Adding to 1222502225 its reverse (5222052221), we get a palindrome (6444554446).

The spelling of 1222502225 in words is "one billion, two hundred twenty-two million, five hundred two thousand, two hundred twenty-five".