85378250 has 32 divisors (see below), whose sum is σ = 169238160. Its totient is φ = 32140800.

The previous prime is 85378219. The next prime is 85378261. The reversal of 85378250 is 5287358.

It can be written as a sum of positive squares in 8 ways, for example, as 1234321 + 84143929 = 1111^2 + 9173^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5795 + ... + 14294.

Almost surely, 2^85378250 is an apocalyptic number.

85378250 is a deficient number, since it is larger than the sum of its proper divisors (83859910).

85378250 is a wasteful number, since it uses less digits than its factorization.

85378250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20123 (or 20113 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 85378250 is about 9240.0351730932. The cubic root of 85378250 is about 440.3341985771.

The spelling of 85378250 in words is "eighty-five million, three hundred seventy-eight thousand, two hundred fifty".