128:160:192:225

Chord information

Harmonics	128:160:192:225
Subharmonics	1/(225:180:150:128)
Intervals from root	1/1 – 5/4 – 3/2 – 225/128
Cents from root	0¢ 386¢ 702¢ 977¢
Step intervals	5/4, 6/5, 75/64
Step cents	386¢, 316¢, 275¢
Prime limit	5
Genus	32 ⋅ 52 (225)
Intervallic odd limit	225
Otonal odd limit	225
Utonal odd limit	225
Consistent edos (d ≥ 2)	22edo*, 31edo*, 53edo*, 65edo*
* 2 ≤ d < 4; ** 4 ≤ d < 8; *** 8 ≤ d < 16; …

128:160:192:225 (1⁄1–5⁄4–3⁄2–225⁄128), an inversion of the Neapolitan[1] or German sixth[2] chord, is found rooted at 16⁄15 (♭II) and 8⁄5 (♭VI) in the duodene.

Although 225/128 is often considered an augmented sixth rather than a minor seventh, in septimal meantone it is tuned identically to the harmonic seventh, so the chord employing it may be considered a kind of dominant seventh chord.