205241244125 has 16 divisors (see below), whose sum is σ = 256214123568. Its totient is φ = 164146168000.

The previous prime is 205241244097. The next prime is 205241244163. The reversal of 205241244125 is 521442142502.

It can be written as a sum of positive squares in 8 ways, for example, as 89881838809 + 115359405316 = 299803^2 + 339646^2 .

It is a de Polignac number, because none of the positive numbers 2^k-205241244125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205241244091 and 205241244100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209255 + ... + 673995.

It is an arithmetic number, because the mean of its divisors is an integer number (16013382723).

Almost surely, 2^205241244125 is an apocalyptic number.

205241244125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205241244125 is a deficient number, since it is larger than the sum of its proper divisors (50972879443).

205241244125 is an equidigital number, since it uses as much as digits as its factorization.

205241244125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468289 (or 468279 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 205241244125 its reverse (521442142502), we get a palindrome (726683386627).

The spelling of 205241244125 in words is "two hundred five billion, two hundred forty-one million, two hundred forty-four thousand, one hundred twenty-five".