sensitivity and specificity is given need to calculate the true positive I have the sensitivity value known as, 0.825 and specificity as 1.00. Can we derive the True Positive (TP) and True Negative (TN) values from that? Is that possible at all?

Sensitivity is $\text{TP}/(\text{TP+FN})$, and specificity is $\text{TN}/(\text{TN+FP})$. If specificity is $1$, there is no false positives. The sensitivity figure yields $0.175\times\text{TP}=0.825\times \text{FN}$.
Even if you know the total number of samples, $\text{TP+FN+TN}=n$, you'd still need to know the number of true negatives in terms of others. So, it's not possible to calculate the true pos/neg.
