What is the product of all the coordinates of all the points of intersection of the two circles defined by x^2-2x+y^2-10y+25=0 and x^2-8x+y^2-10y+37=0?

What is the product of all the coordinates of all the points of intersection of the two circles defined by x^2-2x+y^2-10y+25=0 and x^2-8x+y^2-10y+37=0?