205242452 has 6 divisors (see below), whose sum is σ = 359174298. Its totient is φ = 102621224.

The previous prime is 205242439. The next prime is 205242481. The reversal of 205242452 is 254242502.

It can be written as a sum of positive squares in only one way, i.e., 168324676 + 36917776 = 12974^2 + 6076^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25655303 + ... + 25655310.

It is an arithmetic number, because the mean of its divisors is an integer number (59862383).

Almost surely, 2^205242452 is an apocalyptic number.

It is an amenable number.

205242452 is a deficient number, since it is larger than the sum of its proper divisors (153931846).

205242452 is a wasteful number, since it uses less digits than its factorization.

205242452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51310617 (or 51310615 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 205242452 is about 14326.2853524562. The cubic root of 205242452 is about 589.8692154813.

Adding to 205242452 its reverse (254242502), we get a palindrome (459484954).

Subtracting 205242452 from its reverse (254242502), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 205242452 in words is "two hundred five million, two hundred forty-two thousand, four hundred fifty-two".