Two thoughts:
First, your gauge may not be reading accurately. I've had enough bad senders to know. You could hook up a cheap mechanical gauge temporarily just to see. Here's how I did it and found out my pressure was fine.
http://www.fordbarn.com/forum/showthread.php?t=68156 Replaced the sender and the gauge read fine.
Second, pressure is not as important as flow. Any pressure indicates flow as you have seen. That's all that's really necessary - to get the oil where it needs to be. As Lawson said, 25 psi is certainly within what I would call normal range.