205253005 has 8 divisors (see below), whose sum is σ = 249678072. Its totient is φ = 161952768.

The previous prime is 205252987. The next prime is 205253051. The reversal of 205253005 is 500352502.

It can be written as a sum of positive squares in 4 ways, for example, as 23164969 + 182088036 = 4813^2 + 13494^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205253005 - 2⁵ = 205252973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280804 + ... + 281533.

It is an arithmetic number, because the mean of its divisors is an integer number (31209759).

Almost surely, 2^205253005 is an apocalyptic number.

It is an amenable number.

205253005 is a deficient number, since it is larger than the sum of its proper divisors (44425067).

205253005 is an equidigital number, since it uses as much as digits as its factorization.

205253005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562415.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 205253005 is about 14326.6536567337. The cubic root of 205253005 is about 589.8793251233.

The spelling of 205253005 in words is "two hundred five million, two hundred fifty-three thousand, five".