1222522505 has 4 divisors (see below), whose sum is σ = 1467027012. Its totient is φ = 978018000.

The previous prime is 1222522391. The next prime is 1222522507. The reversal of 1222522505 is 5052252221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 433305856 + 789216649 = 20816^2 + 28093^2 .

It is not a de Polignac number, because 1222522505 - 2¹⁰ = 1222521481 is a prime.

It is a super-2 number, since 2×1222522505² = 2989122550462950050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222522507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122252246 + ... + 122252255.

It is an arithmetic number, because the mean of its divisors is an integer number (366756753).

Almost surely, 2^1222522505 is an apocalyptic number.

It is an amenable number.

1222522505 is a deficient number, since it is larger than the sum of its proper divisors (244504507).

1222522505 is an equidigital number, since it uses as much as digits as its factorization.

1222522505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244504506.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1222522505 is about 34964.5893011773. The cubic root of 1222522505 is about 1069.2656634941.

Adding to 1222522505 its reverse (5052252221), we get a palindrome (6274774726).

The spelling of 1222522505 in words is "one billion, two hundred twenty-two million, five hundred twenty-two thousand, five hundred five".