There are two holders for this record:

Pranamya Menaria (India; born August 10, 2005) has 25 in total (12 fingers and 13 toes). This is as a result of the condition Polydactyly and Syndactyly.

Devendra Harne, pictured above, (India; born January 9, 1995) also has 25 in total (12 fingers and 13 toes) as a result of the condition polydactylism.