85825565 has 16 divisors (see below), whose sum is σ = 123899520. Its totient is φ = 55753920.

The previous prime is 85825561. The next prime is 85825583. The reversal of 85825565 is 56552858.

It is not a de Polignac number, because 85825565 - 2² = 85825561 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85825561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63866 + ... + 65195.

It is an arithmetic number, because the mean of its divisors is an integer number (7743720).

Almost surely, 2^85825565 is an apocalyptic number.

It is an amenable number.

85825565 is a deficient number, since it is larger than the sum of its proper divisors (38073955).

85825565 is a wasteful number, since it uses less digits than its factorization.

85825565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129092.

The product of its digits is 480000, while the sum is 44.

The square root of 85825565 is about 9264.2088167312. The cubic root of 85825565 is about 441.1018613161.

The spelling of 85825565 in words is "eighty-five million, eight hundred twenty-five thousand, five hundred sixty-five".