25670055577 has 2 divisors, whose sum is σ = 25670055578. Its totient is φ = 25670055576.

The previous prime is 25670055571. The next prime is 25670055629. The reversal of 25670055577 is 77555007652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25517187081 + 152868496 = 159741^2 + 12364^2 .

It is a cyclic number.

It is not a de Polignac number, because 25670055577 - 2¹¹ = 25670053529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25670055577.

It is not a weakly prime, because it can be changed into another prime (25670055571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835027788 + 12835027789.

It is an arithmetic number, because the mean of its divisors is an integer number (12835027789).

Almost surely, 2^25670055577 is an apocalyptic number.

It is an amenable number.

25670055577 is a deficient number, since it is larger than the sum of its proper divisors (1).

25670055577 is an equidigital number, since it uses as much as digits as its factorization.

25670055577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2572500, while the sum is 49.

The spelling of 25670055577 in words is "twenty-five billion, six hundred seventy million, fifty-five thousand, five hundred seventy-seven".