The following is the factory default MIDI Note Number assignments in the TD-25:
Kick = 36
Snare Head = 38
Snare Rim = 40
Snare Brush = 23
Snare XStick = 37
Tom 1 Head = 48
Tom 1 Rim = 50
Tom 2 Head = 45
Tom 2 Rim = 47
Tom 3 Head = 43
Tom 3 Rim = 58
HH Open Bow = 46
HH Open Edge = 26
HH Closed Bow = 42
HH Pedal = 44
Crash 1 Bow = 49
Crash 1 Edge = 55
Crash 2 Bow = 57
Crash 2 Edge = 52
Ride Bow = 51
Ride Edge = 59
Ride Bell = 53
Aux Head = 27
Aux Rim = 28