Here's why:
* "El veinticinco De" doesn't make sense in this context. It seems like a partial phrase, missing a preposition or a word to clarify what "De" refers to.
* "Es la Navidad" is correct and means "It is Christmas."
To fix the sentence, you need to specify what "De" refers to. Here are some possible correct options:
* "El veinticinco de diciembre es Navidad." (December 25th is Christmas.) This is the most common and accurate way to say this in Spanish.
* "El veinticinco de cada año es la Navidad." (The 25th of every year is Christmas.)
* "El veinticinco de este mes es la Navidad." (The 25th of this month is Christmas.)
It's important to use the correct preposition ("de") when referring to dates in Spanish.