Easy Nested Functions

Using the Ramanujan's formula for nested radical (26) :

$x+n+a = \sqrt{ax + (n+a)^2 + x\sqrt{a(x+n) + (n+a)^2 + (x+n)\sqrt{a(x+2n) + (n+a)^2 + (x+2n)\sqrt{\cdots}}}}$

and putting $x=1$ , $a=0$ and $n=25$ , we have $1+0+25 = \sqrt{625+\sqrt{625+26\sqrt{625+51\sqrt{\cdots}}}} = \boxed{26}$ .