Just the opposite. Anytime it's much over $25 it's likely a poor buy.
Below $25 it may or may not be a good buy depending on the course of interest rates till maturity.
If interest rates soar there's no upward reset (only downward) and you'd be stuck with a low yielding security with a very long maturity. The security would plummet but eventually it would be worth $25 at maturity.