85225811 has 32 divisors (see below), whose sum is σ = 105235200. Its totient is φ = 68250240.

The previous prime is 85225807. The next prime is 85225813. The reversal of 85225811 is 11852258.

It is a happy number.

It is not a de Polignac number, because 85225811 - 2² = 85225807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85225813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1026776 + ... + 1026858.

It is an arithmetic number, because the mean of its divisors is an integer number (3288600).

Almost surely, 2^85225811 is an apocalyptic number.

85225811 is a deficient number, since it is larger than the sum of its proper divisors (20009389).

85225811 is a wasteful number, since it uses less digits than its factorization.

85225811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 130 counting only the distinct ones).

The product of its digits is 6400, while the sum is 32.

The square root of 85225811 is about 9231.7826555872. The cubic root of 85225811 is about 440.0719768615.

The spelling of 85225811 in words is "eighty-five million, two hundred twenty-five thousand, eight hundred eleven".