565520834785225 has 12 divisors (see below), whose sum is σ = 764995456509840. Its totient is φ = 411287879843600.

The previous prime is 565520834785211. The next prime is 565520834785229. The reversal of 565520834785225 is 522587438025565.

It is a de Polignac number, because none of the positive numbers 2^k-565520834785225 is a prime.

It is not an unprimeable number, because it can be changed into a prime (565520834785229) 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 in 11 ways as a sum of consecutive naturals, for example, 1028219699335 + ... + 1028219699884.

It is an arithmetic number, because the mean of its divisors is an integer number (63749621375820).

Almost surely, 2^{565520834785225} is an apocalyptic number.

565520834785225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

565520834785225 is a deficient number, since it is larger than the sum of its proper divisors (199474621724615).

565520834785225 is a wasteful number, since it uses less digits than its factorization.

565520834785225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056439399240 (or 2056439399235 counting only the distinct ones).

The product of its (nonzero) digits is 806400000, while the sum is 67.

The spelling of 565520834785225 in words is "five hundred sixty-five trillion, five hundred twenty billion, eight hundred thirty-four million, seven hundred eighty-five thousand, two hundred twenty-five".