\[\boxed{\mathbf{278}.}\]
\[1)\ a = 10^{37} - 199;\ \ m = 99:\]
\[10^{37} \equiv 1\ (mod\ 99);\ \ \]
\[199 \equiv 1\ (mod\ 99);\]
\[a = 1 - 1 = 0 \rightarrow a \vdots 99.\]
\[2)\ a = 2^{25} + 1;\ \ m = 33:\]
\[2^{25} = \left( 2^{5} \right)^{5} \equiv - 1(mod\ 33);\]
\[a = - 1 + 1 = 0 \rightarrow a\ \vdots 33.\]