1625068309693 has 2 divisors, whose sum is σ = 1625068309694. Its totient is φ = 1625068309692.

The previous prime is 1625068309643. The next prime is 1625068309729. The reversal of 1625068309693 is 3969038605261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1522269842809 + 102798466884 = 1233803^2 + 320622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1625068309693 is a prime.

It is a super-2 number, since 2×1625068309693² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1625068309603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812534154846 + 812534154847.

It is an arithmetic number, because the mean of its divisors is an integer number (812534154847).

Almost surely, 2^{1625068309693} is an apocalyptic number.

It is an amenable number.

1625068309693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625068309693 is an equidigital number, since it uses as much as digits as its factorization.

1625068309693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 1625068309693 in words is "one trillion, six hundred twenty-five billion, sixty-eight million, three hundred nine thousand, six hundred ninety-three".