205372200205 has 4 divisors (see below), whose sum is σ = 246446640252. Its totient is φ = 164297760160.

The previous prime is 205372200157. The next prime is 205372200233. The reversal of 205372200205 is 502002273502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502002273502 = 2 ⋅251001136751.

It can be written as a sum of positive squares in 2 ways, for example, as 100967604516 + 104404595689 = 317754^2 + 323117^2 .

It is not a de Polignac number, because 205372200205 - 2¹³ = 205372192013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20537220016 + ... + 20537220025.

It is an arithmetic number, because the mean of its divisors is an integer number (61611660063).

Almost surely, 2^205372200205 is an apocalyptic number.

It is an amenable number.

205372200205 is a deficient number, since it is larger than the sum of its proper divisors (41074440047).

205372200205 is an equidigital number, since it uses as much as digits as its factorization.

205372200205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41074440046.

The product of its (nonzero) digits is 8400, while the sum is 28.

Adding to 205372200205 its reverse (502002273502), we get a palindrome (707374473707).

The spelling of 205372200205 in words is "two hundred five billion, three hundred seventy-two million, two hundred thousand, two hundred five".