85081825 has 24 divisors (see below), whose sum is σ = 109564416. Its totient is φ = 65472000.

The previous prime is 85081823. The next prime is 85081837. The reversal of 85081825 is 52818058.

It is not a de Polignac number, because 85081825 - 2¹ = 85081823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85081823) 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 23 ways as a sum of consecutive naturals, for example, 240849 + ... + 241201.

It is an arithmetic number, because the mean of its divisors is an integer number (4565184).

Almost surely, 2^85081825 is an apocalyptic number.

It is an amenable number.

85081825 is a deficient number, since it is larger than the sum of its proper divisors (24482591).

85081825 is a wasteful number, since it uses less digits than its factorization.

85081825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 85081825 is about 9223.9809735276. The cubic root of 85081825 is about 439.8240084729.

The spelling of 85081825 in words is "eighty-five million, eighty-one thousand, eight hundred twenty-five".