2185522005 has 8 divisors (see below), whose sum is σ = 3496835232. Its totient is φ = 1165611728.

The previous prime is 2185521991. The next prime is 2185522013. The reversal of 2185522005 is 5002255812.

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 2185522005 - 2²¹ = 2183424853 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72850719 + ... + 72850748.

It is an arithmetic number, because the mean of its divisors is an integer number (437104404).

Almost surely, 2^2185522005 is an apocalyptic number.

It is an amenable number.

2185522005 is a deficient number, since it is larger than the sum of its proper divisors (1311313227).

2185522005 is a wasteful number, since it uses less digits than its factorization.

2185522005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145701475.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 2185522005 is about 46749.5668963895. The cubic root of 2185522005 is about 1297.7321416679.

Adding to 2185522005 its reverse (5002255812), we get a palindrome (7187777817).

The spelling of 2185522005 in words is "two billion, one hundred eighty-five million, five hundred twenty-two thousand, five".