205252202523 has 4 divisors (see below), whose sum is σ = 273669603368. Its totient is φ = 136834801680.

The previous prime is 205252202513. The next prime is 205252202543. The reversal of 205252202523 is 325202252502.

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

It is not a de Polignac number, because 205252202523 - 2⁹ = 205252202011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205252202513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34208700418 + ... + 34208700423.

It is an arithmetic number, because the mean of its divisors is an integer number (68417400842).

Almost surely, 2^205252202523 is an apocalyptic number.

205252202523 is a deficient number, since it is larger than the sum of its proper divisors (68417400845).

205252202523 is an equidigital number, since it uses as much as digits as its factorization.

205252202523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68417400844.

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 205252202523 in words is "two hundred five billion, two hundred fifty-two million, two hundred two thousand, five hundred twenty-three".