205212259 has 4 divisors (see below), whose sum is σ = 234528304. Its totient is φ = 175896216.

The previous prime is 205212239. The next prime is 205212263. The reversal of 205212259 is 952212502.

205212259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 205212259 - 2¹¹ = 205210211 is a prime.

It is a super-2 number, since 2×205212259² = 84224142487766162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205212239) 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, 14658012 + ... + 14658025.

It is an arithmetic number, because the mean of its divisors is an integer number (58632076).

Almost surely, 2^205212259 is an apocalyptic number.

205212259 is a deficient number, since it is larger than the sum of its proper divisors (29316045).

205212259 is an equidigital number, since it uses as much as digits as its factorization.

205212259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29316044.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 205212259 is about 14325.2315513572. The cubic root of 205212259 is about 589.8402890507.

The spelling of 205212259 in words is "two hundred five million, two hundred twelve thousand, two hundred fifty-nine".