85525089 has 16 divisors (see below), whose sum is σ = 127041600. Its totient is φ = 50815296.

The previous prime is 85525087. The next prime is 85525117. The reversal of 85525089 is 98052558.

It is not a de Polignac number, because 85525089 - 2¹ = 85525087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85525089.

It is not an unprimeable number, because it can be changed into a prime (85525081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36679 + ... + 38940.

It is an arithmetic number, because the mean of its divisors is an integer number (7940100).

Almost surely, 2^85525089 is an apocalyptic number.

It is an amenable number.

85525089 is a deficient number, since it is larger than the sum of its proper divisors (41516511).

85525089 is a wasteful number, since it uses less digits than its factorization.

85525089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75664.

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 85525089 is about 9247.9775626890. The cubic root of 85525089 is about 440.5864923443.

The spelling of 85525089 in words is "eighty-five million, five hundred twenty-five thousand, eighty-nine".