205241858585 has 32 divisors (see below), whose sum is σ = 267340372992. Its totient is φ = 150671211520.

The previous prime is 205241858561. The next prime is 205241858593. The reversal of 205241858585 is 585858142502.

It is not a de Polignac number, because 205241858585 - 2¹⁶ = 205241793049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 953015 + ... + 1148355.

It is an arithmetic number, because the mean of its divisors is an integer number (8354386656).

Almost surely, 2^205241858585 is an apocalyptic number.

It is an amenable number.

205241858585 is a deficient number, since it is larger than the sum of its proper divisors (62098514407).

205241858585 is a wasteful number, since it uses less digits than its factorization.

205241858585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195673.

The product of its (nonzero) digits is 5120000, while the sum is 53.

The spelling of 205241858585 in words is "two hundred five billion, two hundred forty-one million, eight hundred fifty-eight thousand, five hundred eighty-five".