85170325 has 12 divisors (see below), whose sum is σ = 108188388. Its totient is φ = 66473600.

The previous prime is 85170317. The next prime is 85170353. The reversal of 85170325 is 52307158.

It can be written as a sum of positive squares in 6 ways, for example, as 16313521 + 68856804 = 4039^2 + 8298^2 .

It is not a de Polignac number, because 85170325 - 2³ = 85170317 is a prime.

It is a Duffinian number.

It is a congruent 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, 40522 + ... + 42571.

It is an arithmetic number, because the mean of its divisors is an integer number (9015699).

Almost surely, 2^85170325 is an apocalyptic number.

It is an amenable number.

85170325 is a deficient number, since it is larger than the sum of its proper divisors (23018063).

85170325 is a wasteful number, since it uses less digits than its factorization.

85170325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83144 (or 83139 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 85170325 is about 9228.7770045657. Note that the first 3 decimals coincide. The cubic root of 85170325 is about 439.9764536298.

The spelling of 85170325 in words is "eighty-five million, one hundred seventy thousand, three hundred twenty-five".