15625.
The way to evaluate this problem is to use PEMDAS or the order of operations.
In this case, the exponent comes first, so that should be the first step.
[tex]5[/tex] × [tex]5^{5}[/tex] = [tex]5[/tex] × [tex]3125[/tex]
Then comes multiplication, so 5 times 3125 is
15625.
Hope this helps and please consider marking branliest :))
