205125533 has 4 divisors (see below), whose sum is σ = 205642620. Its totient is φ = 204608448.

The previous prime is 205125517. The next prime is 205125551. The reversal of 205125533 is 335521502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 132756484 + 72369049 = 11522^2 + 8507^2 .

It is a cyclic number.

It is not a de Polignac number, because 205125533 - 2⁴ = 205125517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205125563) 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, 257948 + ... + 258741.

It is an arithmetic number, because the mean of its divisors is an integer number (51410655).

Almost surely, 2^205125533 is an apocalyptic number.

It is an amenable number.

205125533 is a deficient number, since it is larger than the sum of its proper divisors (517087).

205125533 is an equidigital number, since it uses as much as digits as its factorization.

205125533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517086.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 205125533 is about 14322.2041948856. The cubic root of 205125533 is about 589.7571853461.

The spelling of 205125533 in words is "two hundred five million, one hundred twenty-five thousand, five hundred thirty-three".