The figure is a good figure for a recreational athlete no doubt about it. One should still keep in mind that it is only one figure of a one test.
If the test was performed with direct method on a treadmill, then the figure should be as closest to the "real" Vo2MAX figure as it can get it. But if it was some indirect test performed on a bicycle ergometer with increasing light submaximal workloads, it isn't necessarily a totally valid figure:
- While they are decent estimates about aerobic capacity, the figures measured by indirect methods are known to be prone to error. I don't know if the estimates have been improved in recent decades, but I have a recollection that there have been even up to 30 % deviations when comparing to the figures measured directly via Douglas bag method from the same subjects.
- For the figure to be the most reliable, the testing should be the most similar to the type of exercise the subjects has adapted through his/her training. If you are a recreational runner and the test is performed on a bicycle ergometer, the role of the leg muscles is different and the Vo2MAX figure doesn't necessarily reflect the capacity of your system to use oxygen but is smaller.
In addition, while the improvements in Vo2MAX are similar to logarithmic function which reaches its limits relatively quickly after adaptation to regular training, I wouldn't be totally convinced that your current figure is the upper limit you can reach, because 25 mpw isn't necessarily testing the limits of your cardiorespiratory system.
In addition, because the other part of the equation of relative Vo2MAX is weight, the Vo2MAX is naturally increased if body fat percentage is diminished.