1222015250 has 64 divisors (see below), whose sum is σ = 2481609312. Its totient is φ = 448768000.

The previous prime is 1222015189. The next prime is 1222015273. The reversal of 1222015250 is 525102221.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 30591961 + 1191423289 = 5531^2 + 34517^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170744 + ... + 177756.

Almost surely, 2^1222015250 is an apocalyptic number.

1222015250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222015250 is an abundant number, since it is smaller than the sum of its proper divisors (1259594062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222015250 is a wasteful number, since it uses less digits than its factorization.

1222015250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7088 (or 7078 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1222015250 is about 34957.3347096142. The cubic root of 1222015250 is about 1069.1177547272.

Adding to 1222015250 its reverse (525102221), we get a palindrome (1747117471).

The spelling of 1222015250 in words is "one billion, two hundred twenty-two million, fifteen thousand, two hundred fifty".