1222250225 has 24 divisors (see below), whose sum is σ = 1764797760. Its totient is φ = 822294720.

The previous prime is 1222250219. The next prime is 1222250233. The reversal of 1222250225 is 5220522221.

It is not a de Polignac number, because 1222250225 - 2⁴ = 1222250209 is a prime.

It is a super-2 number, since 2×1222250225² = 2987791225025101250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222250225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56615 + ... + 75164.

It is an arithmetic number, because the mean of its divisors is an integer number (73533240).

Almost surely, 2^1222250225 is an apocalyptic number.

It is an amenable number.

1222250225 is a deficient number, since it is larger than the sum of its proper divisors (542547535).

1222250225 is a wasteful number, since it uses less digits than its factorization.

1222250225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131849 (or 131844 counting only the distinct ones).

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

The square root of 1222250225 is about 34960.6954307262. The cubic root of 1222250225 is about 1069.1862753791.

Adding to 1222250225 its reverse (5220522221), we get a palindrome (6442772446).

The spelling of 1222250225 in words is "one billion, two hundred twenty-two million, two hundred fifty thousand, two hundred twenty-five".