8125628206529 has 2 divisors, whose sum is σ = 8125628206530. Its totient is φ = 8125628206528.

The previous prime is 8125628206483. The next prime is 8125628206559. The reversal of 8125628206529 is 9256028265218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6897199567504 + 1228428639025 = 2626252^2 + 1108345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8125628206529 is a prime.

It is not a weakly prime, because it can be changed into another prime (8125628206559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062814103264 + 4062814103265.

It is an arithmetic number, because the mean of its divisors is an integer number (4062814103265).

Almost surely, 2^{8125628206529} is an apocalyptic number.

It is an amenable number.

8125628206529 is a deficient number, since it is larger than the sum of its proper divisors (1).

8125628206529 is an equidigital number, since it uses as much as digits as its factorization.

8125628206529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 8125628206529 in words is "eight trillion, one hundred twenty-five billion, six hundred twenty-eight million, two hundred six thousand, five hundred twenty-nine".