200

Number
$200$ (two hundred) is:


 * $2^3 \times 5^2$


 * The $9$th positive integer after $50, 65, 85, 125, 130, 145, 170, 185$ which can be expressed as the sum of two square numbers in two or more different ways:
 * $200 = 10^2 + 10^2 = 14^2 + 2^2$


 * The $1$st positive integer that cannot be made into a prime number by changing just $1$ digit

Also see