sorry, i realise that sounded rather rude, but why not look on the brightside, that you will find another job and wont need benefits?
The benefits system is really in place for those who have nothing mainly so having 25 000 pounds dosent really tally with that, you will be expected to use that money to live off before you getany means tested benefits (of which cuncil tax is one) additionally, if your redundancy pay ncludes any money in lieu of notice, you wont be able to claim jsa till after that period