Usually, no. Laptops are made in a way that almost nothing can be upgraded, save for memory and hard drive. If by chance it is possible, it would require sending it to a workshop that would charge a hefty fee to do so.
Unfortunatly that CPU is a BGA socket in other words is solidered to the motherboard an is non removable. Your stuck with it. Any amd E series or Intel Atom Series are all soilder and you are unable to remove it. The same goes for any Mac laptop as well.