205522004225 has 12 divisors (see below), whose sum is σ = 255023451264. Its totient is φ = 164303947920.

The previous prime is 205522004197. The next prime is 205522004279. The reversal of 205522004225 is 522400225502.

It is not a de Polignac number, because 205522004225 - 2⁶ = 205522004161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2804489 + ... + 2876838.

It is an arithmetic number, because the mean of its divisors is an integer number (21251954272).

Almost surely, 2^205522004225 is an apocalyptic number.

205522004225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205522004225 is a deficient number, since it is larger than the sum of its proper divisors (49501447039).

205522004225 is a wasteful number, since it uses less digits than its factorization.

205522004225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5682784 (or 5682779 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

Adding to 205522004225 its reverse (522400225502), we get a palindrome (727922229727).

The spelling of 205522004225 in words is "two hundred five billion, five hundred twenty-two million, four thousand, two hundred twenty-five".