205225031535115 has 4 divisors (see below), whose sum is σ = 246270037842144. Its totient is φ = 164180025228088.

The previous prime is 205225031535071. The next prime is 205225031535137. The reversal of 205225031535115 is 511535130522502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205225031535115 - 2¹⁹ = 205225031010827 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 20522503153507 + ... + 20522503153516.

It is an arithmetic number, because the mean of its divisors is an integer number (61567509460536).

Almost surely, 2^{205225031535115} is an apocalyptic number.

205225031535115 is a deficient number, since it is larger than the sum of its proper divisors (41045006307029).

205225031535115 is an equidigital number, since it uses as much as digits as its factorization.

205225031535115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41045006307028.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 205225031535115 in words is "two hundred five trillion, two hundred twenty-five billion, thirty-one million, five hundred thirty-five thousand, one hundred fifteen".