1222031225 has 6 divisors (see below), whose sum is σ = 1515318750. Its totient is φ = 977624960.

The previous prime is 1222031221. The next prime is 1222031231. The reversal of 1222031225 is 5221302221.

It can be written as a sum of positive squares in 3 ways, for example, as 15649936 + 1206381289 = 3956^2 + 34733^2 .

It is not a de Polignac number, because 1222031225 - 2² = 1222031221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222031197 and 1222031206.

It is not an unprimeable number, because it can be changed into a prime (1222031221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24440600 + ... + 24440649.

It is an arithmetic number, because the mean of its divisors is an integer number (252553125).

Almost surely, 2^1222031225 is an apocalyptic number.

It is an amenable number.

1222031225 is a deficient number, since it is larger than the sum of its proper divisors (293287525).

1222031225 is an equidigital number, since it uses as much as digits as its factorization.

1222031225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48881259 (or 48881254 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1222031225 is about 34957.5632016878. The cubic root of 1222031225 is about 1069.1224134475.

Adding to 1222031225 its reverse (5221302221), we get a palindrome (6443333446).

The spelling of 1222031225 in words is "one billion, two hundred twenty-two million, thirty-one thousand, two hundred twenty-five".