252818200205 has 4 divisors (see below), whose sum is σ = 303381840252. Its totient is φ = 202254560160.

The previous prime is 252818200171. The next prime is 252818200207. The reversal of 252818200205 is 502002818252.

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 180966861604 + 71851338601 = 425402^2 + 268051^2 .

It is not a de Polignac number, because 252818200205 - 2²² = 252814005901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252818200207) 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, 25281820016 + ... + 25281820025.

It is an arithmetic number, because the mean of its divisors is an integer number (75845460063).

Almost surely, 2^252818200205 is an apocalyptic number.

It is an amenable number.

252818200205 is a deficient number, since it is larger than the sum of its proper divisors (50563640047).

252818200205 is an equidigital number, since it uses as much as digits as its factorization.

252818200205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50563640046.

The product of its (nonzero) digits is 25600, while the sum is 35.

The spelling of 252818200205 in words is "two hundred fifty-two billion, eight hundred eighteen million, two hundred thousand, two hundred five".