Number of distinct decoding

Two people want to send coded messages to each other. One possible encoding scheme is to simply replace each letter with its numerical value in the alphabet and then string all the digits together without spaces. Determine the number of possible ways to decode a message encoded this way.
eg: the message encoded as 25114 can be decoded as BEAAD, BEAN, YAD, YAN, ‘YKD’ and ‘BEKD’, so there are 6 different decoding of given string value.