1625313750617 has 2 divisors, whose sum is σ = 1625313750618. Its totient is φ = 1625313750616.

The previous prime is 1625313750581. The next prime is 1625313750667. The reversal of 1625313750617 is 7160573135261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367428535641 + 257885214976 = 1169371^2 + 507824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625313750617 - 2²⁴ = 1625296973401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1625313750667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812656875308 + 812656875309.

It is an arithmetic number, because the mean of its divisors is an integer number (812656875309).

Almost surely, 2^{1625313750617} is an apocalyptic number.

It is an amenable number.

1625313750617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625313750617 is an equidigital number, since it uses as much as digits as its factorization.

1625313750617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793800, while the sum is 47.

Adding to 1625313750617 its reverse (7160573135261), we get a palindrome (8785886885878).

The spelling of 1625313750617 in words is "one trillion, six hundred twenty-five billion, three hundred thirteen million, seven hundred fifty thousand, six hundred seventeen".