Required for intestinal cell division following the 16E cell stage of embryogenesis (PubMed:27104746). Regulates intestinal cell divisions and binucleations probably by modulating the activity of the cell cycle regulator wee-1.3 and by activating the cdk-1/cyb-1 complex (PubMed:27104746). Plays a role in male tail development, via regulation of the cell divisions of the ray precursor cell lineages, perhaps acting together with cell cycle regulators cyl-1, cdk-1, cyb-3, and cyd-1 (PubMed:27923661). H2O + O-phospho-L-tyrosyl-[protein] = L-tyrosyl-[protein] + phosphate Transiently expressed in the intestine during larval development (PubMed:27104746). Expressed in the intestine in L1 stage larvae, not expressed in L2 to L3 stage larvae, but is then again expressed in the gonad of L4 stage larvae (PubMed:27104746). Expressed in seam cells during larval development (PubMed:27923661). Broadly expressed throughout development in multiple male somatic tissues, including pharynx, ventral nerve cord, body muscles, diagonal muscles, and hypodermis (PubMed:27923661). Viable, but 85% of animals are sterile at 20 degrees Celsius (PubMed:27104746). Reduced number of intestinal cells in 1.5-fold stage embryos due to defective intestinal divisions and binuleations at the 16E cell stage of embryonic development (PubMed:27104746). Knockout with wee-1.3 RNAi suppresses the defect in intestinal cell divisions in the cdc-25.2 single mutant (PubMed:27104746). RNAi-mediated knockdown causes abnormal male tail morphology; this phenotype is suppressed by simultaneous RNAi-mediated knockdown of wee-1.3 (PubMed:27923661). Belongs to the MPI phosphatase family.