6725778860569 has 2 divisors, whose sum is σ = 6725778860570. Its totient is φ = 6725778860568.

The previous prime is 6725778860551. The next prime is 6725778860597. The reversal of 6725778860569 is 9650688775276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5462036410000 + 1263742450569 = 2337100^2 + 1124163^2 .

It is a cyclic number.

It is not a de Polignac number, because 6725778860569 - 2²⁹ = 6725241989657 is a prime.

It is a super-2 number, since 2×6725778860569² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6725778860495 and 6725778860504.

It is not a weakly prime, because it can be changed into another prime (6725778860519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3362889430284 + 3362889430285.

It is an arithmetic number, because the mean of its divisors is an integer number (3362889430285).

Almost surely, 2^{6725778860569} is an apocalyptic number.

It is an amenable number.

6725778860569 is a deficient number, since it is larger than the sum of its proper divisors (1).

6725778860569 is an equidigital number, since it uses as much as digits as its factorization.

6725778860569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2133734400, while the sum is 76.

The spelling of 6725778860569 in words is "six trillion, seven hundred twenty-five billion, seven hundred seventy-eight million, eight hundred sixty thousand, five hundred sixty-nine".