205020255245 has 48 divisors (see below), whose sum is σ = 269376187392. Its totient is φ = 149715371520.

The previous prime is 205020255227. The next prime is 205020255281. The reversal of 205020255245 is 542552020502.

205020255245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205020255245 - 2¹⁶ = 205020189709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86250497 + ... + 86252873.

It is an arithmetic number, because the mean of its divisors is an integer number (5612003904).

Almost surely, 2^205020255245 is an apocalyptic number.

It is an amenable number.

205020255245 is a deficient number, since it is larger than the sum of its proper divisors (64355932147).

205020255245 is a wasteful number, since it uses less digits than its factorization.

205020255245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502 (or 3489 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

Adding to 205020255245 its reverse (542552020502), we get a palindrome (747572275747).

The spelling of 205020255245 in words is "two hundred five billion, twenty million, two hundred fifty-five thousand, two hundred forty-five".