Well, a MiG-25 was a pure interceptor, designed to catch and shootdown U-2s and SR-71s. It’s turn radius was a hundred miles, and it could only sustain 3 G’s before the wings would fall off. It was no dogfighter like the F-15, but was designed to fly mostly in a straight line like a bat out of hell.
That and bombers. But speaking of recon aircraft, the last time I saw mention of the Mig-25, ironically, was that in the role of a recon aircraft. India, if I'm not mistaken.