205205051235 has 16 divisors (see below), whose sum is σ = 330913345536. Its totient is φ = 108580939488.

The previous prime is 205205051189. The next prime is 205205051267. The reversal of 205205051235 is 532150502502.

It is not a de Polignac number, because 205205051235 - 2¹⁷ = 205204920163 is a prime.

It is a super-2 number, since 2×205205051235² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53857689 + ... + 53861498.

It is an arithmetic number, because the mean of its divisors is an integer number (20682084096).

Almost surely, 2^205205051235 is an apocalyptic number.

205205051235 is a deficient number, since it is larger than the sum of its proper divisors (125708294301).

205205051235 is a wasteful number, since it uses less digits than its factorization.

205205051235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107719322.

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 205205051235 its reverse (532150502502), we get a palindrome (737355553737).

The spelling of 205205051235 in words is "two hundred five billion, two hundred five million, fifty-one thousand, two hundred thirty-five".