Bluebulb Projects' The Measure of Things presents:
25,000 is about four-and-a-half times the number of Bishops in the Catholic Church
In other words, it's 4.6710 times the count of Bishops in the Catholic Church, and the count of Bishops in the Catholic Church is 0.21410 times that amount.
(2015 figures; total Latin and Eastern Church figures; including Pope)