2805825647 has 2 divisors, whose sum is σ = 2805825648. Its totient is φ = 2805825646.

The previous prime is 2805825613. The next prime is 2805825689. The reversal of 2805825647 is 7465285082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2805825647 - 2¹⁴ = 2805809263 is a prime.

It is a super-2 number, since 2×2805825647² = 15745315122725937218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2805825697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402912823 + 1402912824.

It is an arithmetic number, because the mean of its divisors is an integer number (1402912824).

Almost surely, 2^2805825647 is an apocalyptic number.

2805825647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805825647 is an equidigital number, since it uses as much as digits as its factorization.

2805825647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The square root of 2805825647 is about 52970.0448083632. The cubic root of 2805825647 is about 1410.4365710482.

The spelling of 2805825647 in words is "two billion, eight hundred five million, eight hundred twenty-five thousand, six hundred forty-seven".