85042425 has 24 divisors (see below), whose sum is σ = 151420864. Its totient is φ = 41866560.

The previous prime is 85042417. The next prime is 85042427. The reversal of 85042425 is 52424058.

It is not a de Polignac number, because 85042425 - 2³ = 85042417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85042392 and 85042401.

It is not an unprimeable number, because it can be changed into a prime (85042427) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 42637 + ... + 44586.

Almost surely, 2^85042425 is an apocalyptic number.

It is an amenable number.

85042425 is a deficient number, since it is larger than the sum of its proper divisors (66378439).

85042425 is a wasteful number, since it uses less digits than its factorization.

85042425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87249 (or 87244 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 85042425 is about 9221.8449889380. The cubic root of 85042425 is about 439.7561062249.

The spelling of 85042425 in words is "eighty-five million, forty-two thousand, four hundred twenty-five".