205055525 has 6 divisors (see below), whose sum is σ = 254268882. Its totient is φ = 164044400.

The previous prime is 205055507. The next prime is 205055533. The reversal of 205055525 is 525550502.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 65011969 + 140043556 = 8063^2 + 11834^2 .

It is not a de Polignac number, because 205055525 - 2¹⁰ = 205054501 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 4101086 + ... + 4101135.

It is an arithmetic number, because the mean of its divisors is an integer number (42378147).

Almost surely, 2^205055525 is an apocalyptic number.

205055525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205055525 is a deficient number, since it is larger than the sum of its proper divisors (49213357).

205055525 is an equidigital number, since it uses as much as digits as its factorization.

205055525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8202231 (or 8202226 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 205055525 is about 14319.7599491053. The cubic root of 205055525 is about 589.6900842912.

It can be divided in two parts, 2050 and 55525, that added together give a palindrome (57575).

The spelling of 205055525 in words is "two hundred five million, fifty-five thousand, five hundred twenty-five".