Declension table of ?pañcaviṃśaka

Masculine	Singular	Dual	Plural
Nominative	pañcaviṃśakaḥ	pañcaviṃśakau	pañcaviṃśakāḥ
Vocative	pañcaviṃśaka	pañcaviṃśakau	pañcaviṃśakāḥ
Accusative	pañcaviṃśakam	pañcaviṃśakau	pañcaviṃśakān
Instrumental	pañcaviṃśakena	pañcaviṃśakābhyām	pañcaviṃśakaiḥ pañcaviṃśakebhiḥ
Dative	pañcaviṃśakāya	pañcaviṃśakābhyām	pañcaviṃśakebhyaḥ
Ablative	pañcaviṃśakāt	pañcaviṃśakābhyām	pañcaviṃśakebhyaḥ
Genitive	pañcaviṃśakasya	pañcaviṃśakayoḥ	pañcaviṃśakānām
Locative	pañcaviṃśake	pañcaviṃśakayoḥ	pañcaviṃśakeṣu

Compound pañcaviṃśaka -

Adverb -pañcaviṃśakam -pañcaviṃśakāt