85002005 has 16 divisors (see below), whose sum is σ = 111570048. Its totient is φ = 61656000.

The previous prime is 85001999. The next prime is 85002007. The reversal of 85002005 is 50020058.

It is a de Polignac number, because none of the positive numbers 2^k-85002005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85002007) 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, 21320 + ... + 24990.

It is an arithmetic number, because the mean of its divisors is an integer number (6973128).

Almost surely, 2^85002005 is an apocalyptic number.

It is an amenable number.

85002005 is a deficient number, since it is larger than the sum of its proper divisors (26568043).

85002005 is a wasteful number, since it uses less digits than its factorization.

85002005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 85002005 is about 9219.6531930437. The cubic root of 85002005 is about 439.6864243037.

The spelling of 85002005 in words is "eighty-five million, two thousand, five".