85646225 has 12 divisors (see below), whose sum is σ = 121373184. Its totient is φ = 58728720.

The previous prime is 85646179. The next prime is 85646237. The reversal of 85646225 is 52264658.

It is not a de Polignac number, because 85646225 - 2⁶ = 85646161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244529 + ... + 244878.

It is an arithmetic number, because the mean of its divisors is an integer number (10114432).

Almost surely, 2^85646225 is an apocalyptic number.

It is an amenable number.

85646225 is a deficient number, since it is larger than the sum of its proper divisors (35726959).

85646225 is a wasteful number, since it uses less digits than its factorization.

85646225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489424 (or 489419 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 85646225 is about 9254.5245690959. The cubic root of 85646225 is about 440.7944068013.

The spelling of 85646225 in words is "eighty-five million, six hundred forty-six thousand, two hundred twenty-five".