205245012 has 48 divisors (see below), whose sum is σ = 579519360. Its totient is φ = 55191552.

The previous prime is 205244993. The next prime is 205245013. The reversal of 205245012 is 210542502.

It is a happy number.

205245012 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

205245012 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 205245012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205245013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70437 + ... + 73292.

It is an arithmetic number, because the mean of its divisors is an integer number (12073320).

Almost surely, 2^205245012 is an apocalyptic number.

It is an amenable number.

205245012 is an abundant number, since it is smaller than the sum of its proper divisors (374274348).

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

205245012 is a wasteful number, since it uses less digits than its factorization.

205245012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143760 (or 143758 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 205245012 is about 14326.3746984364. The cubic root of 205245012 is about 589.8716679611.

Adding to 205245012 its reverse (210542502), we get a palindrome (415787514).

The spelling of 205245012 in words is "two hundred five million, two hundred forty-five thousand, twelve".