85869425 has 12 divisors (see below), whose sum is σ = 107677260. Its totient is φ = 67921920.

The previous prime is 85869391. The next prime is 85869461. The reversal of 85869425 is 52496858.

It can be written as a sum of positive squares in 6 ways, for example, as 3713329 + 82156096 = 1927^2 + 9064^2 .

It is not a de Polignac number, because 85869425 - 2⁶ = 85869361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85869425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17072 + ... + 21521.

It is an arithmetic number, because the mean of its divisors is an integer number (8973105).

Almost surely, 2^85869425 is an apocalyptic number.

It is an amenable number.

85869425 is a deficient number, since it is larger than the sum of its proper divisors (21807835).

85869425 is a wasteful number, since it uses less digits than its factorization.

85869425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38692 (or 38687 counting only the distinct ones).

The product of its digits is 691200, while the sum is 47.

The square root of 85869425 is about 9266.5756890018. The cubic root of 85869425 is about 441.1769882434.

The spelling of 85869425 in words is "eighty-five million, eight hundred sixty-nine thousand, four hundred twenty-five".