628325683309 has 2 divisors, whose sum is σ = 628325683310. Its totient is φ = 628325683308.

The previous prime is 628325683187. The next prime is 628325683331. The reversal of 628325683309 is 903386523826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543090880809 + 85234802500 = 736947^2 + 291950^2 .

It is a cyclic number.

It is not a de Polignac number, because 628325683309 - 2³⁵ = 593965944941 is a prime.

It is a super-2 number, since 2×628325683309² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 628325683309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628325683009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314162841654 + 314162841655.

It is an arithmetic number, because the mean of its divisors is an integer number (314162841655).

Almost surely, 2^628325683309 is an apocalyptic number.

It is an amenable number.

628325683309 is a deficient number, since it is larger than the sum of its proper divisors (1).

628325683309 is an equidigital number, since it uses as much as digits as its factorization.

628325683309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 628325683309 in words is "six hundred twenty-eight billion, three hundred twenty-five million, six hundred eighty-three thousand, three hundred nine".