85249505 has 16 divisors (see below), whose sum is σ = 112014144. Its totient is φ = 61769280.

The previous prime is 85249481. The next prime is 85249519. The reversal of 85249505 is 50594258.

It is not a de Polignac number, because 85249505 - 2⁸ = 85249249 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 12827 + ... + 18303.

It is an arithmetic number, because the mean of its divisors is an integer number (7000884).

Almost surely, 2^85249505 is an apocalyptic number.

It is an amenable number.

85249505 is a deficient number, since it is larger than the sum of its proper divisors (26764639).

85249505 is a wasteful number, since it uses less digits than its factorization.

85249505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 85249505 is about 9233.0658505179. The cubic root of 85249505 is about 440.1127551936.

The spelling of 85249505 in words is "eighty-five million, two hundred forty-nine thousand, five hundred five".