25:30:35:42 is a septimal diminished seventh chord.

Chord information
Harmonics 25:30:35:42
Subharmonics 1/(42:35:30:25)
Intervals from root 1/16/57/542/25
Cents from root 316¢583¢898¢
Step intervals 6/5, 7/6, 6/5
Step cents 316¢, 267¢, 316¢
Color name gu zogu-5 zogugu-7 or g(zg5)zgg7
Prime limit 7
Genus 3527 (525)
Intervallic odd limit 25
Otonal odd limit 35
Utonal odd limit 35
Consistent edos (d ≥ 2) 4edo**, 8edo*, 19edo*, 23edo*, …

https://en.xen.wiki/w/16:20:25:28

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