If the constant term in the expansion of $\left( \frac { \sqrt [ 5 ] { 3 } } { x } + \frac { 2 x } { \sqrt [ 3 ] { 5 } } \right) ^ { 12 } , x \neq 0$, is $\alpha \times 2 ^ { 8 } \times \sqrt [ 5 ] { 3 }$, then $25 \alpha$ is equal to :\\
(1) 724\\
(2) 742\\
(3) 639\\
(4) 693