205012650 has 48 divisors (see below), whose sum is σ = 513136800. Its totient is φ = 54164160.

The previous prime is 205012609. The next prime is 205012651. The reversal of 205012650 is 56210502.

205012650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (205012651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10081 + ... + 22619.

It is an arithmetic number, because the mean of its divisors is an integer number (10690350).

Almost surely, 2^205012650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205012650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256568400).

205012650 is an abundant number, since it is smaller than the sum of its proper divisors (308124150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205012650 is a wasteful number, since it uses less digits than its factorization.

205012650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12663 (or 12658 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 205012650 is about 14318.2628136237. The cubic root of 205012650 is about 589.6489820503.

The spelling of 205012650 in words is "two hundred five million, twelve thousand, six hundred fifty".