1222585205 has 8 divisors (see below), whose sum is σ = 1472400312. Its totient is φ = 974536128.

The previous prime is 1222585201. The next prime is 1222585253. The reversal of 1222585205 is 5025852221.

It can be written as a sum of positive squares in 4 ways, for example, as 23902321 + 1198682884 = 4889^2 + 34622^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222585205 - 2² = 1222585201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222585201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439982 + ... + 442751.

It is an arithmetic number, because the mean of its divisors is an integer number (184050039).

Almost surely, 2^1222585205 is an apocalyptic number.

It is an amenable number.

1222585205 is a deficient number, since it is larger than the sum of its proper divisors (249815107).

1222585205 is an equidigital number, since it uses as much as digits as its factorization.

1222585205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883015.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 1222585205 is about 34965.4859111095. The cubic root of 1222585205 is about 1069.2839431333.

The spelling of 1222585205 in words is "one billion, two hundred twenty-two million, five hundred eighty-five thousand, two hundred five".