25986068477 has 2 divisors, whose sum is σ = 25986068478. Its totient is φ = 25986068476.

The previous prime is 25986068473. The next prime is 25986068513. The reversal of 25986068477 is 77486068952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14916713956 + 11069354521 = 122134^2 + 105211^2 .

It is a cyclic number.

It is not a de Polignac number, because 25986068477 - 2² = 25986068473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25986068473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12993034238 + 12993034239.

It is an arithmetic number, because the mean of its divisors is an integer number (12993034239).

Almost surely, 2^25986068477 is an apocalyptic number.

It is an amenable number.

25986068477 is a deficient number, since it is larger than the sum of its proper divisors (1).

25986068477 is an equidigital number, since it uses as much as digits as its factorization.

25986068477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 25986068477 in words is "twenty-five billion, nine hundred eighty-six million, sixty-eight thousand, four hundred seventy-seven".