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"Treinta" is a noun which is often translated as "thirty", and "veinticinco" is an adjective which is often translated as "twenty-five". Learn more about the difference between "treinta" and "veinticinco" below.
el treinta(
treyn
-
tah
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
2. (number)
b. thirtieth (in dates)
El cumpleaños de mi padre es el treinta de noviembre.My father’s birthday is on the thirtieth of November.
veinticinco(
beyn
-
tee
-
seeng
-
koh
)An adjective is a word that describes a noun (e.g., the big dog).
1. (number)
a. twenty-five
Hay veinticinco alumnos en este salón.There are twenty-five students in this classroom.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
2. (number)
b. twenty-fifth (in dates)
Tenemos que pagar las clases de natación el veinticinco de cada mes.We have to pay for the swimming lessons on the twenty-fifth of each month.