85625879 has 2 divisors, whose sum is σ = 85625880. Its totient is φ = 85625878.

The previous prime is 85625867. The next prime is 85625887. The reversal of 85625879 is 97852658.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85625879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85625819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42812939 + 42812940.

It is an arithmetic number, because the mean of its divisors is an integer number (42812940).

Almost surely, 2^85625879 is an apocalyptic number.

85625879 is a deficient number, since it is larger than the sum of its proper divisors (1).

85625879 is an equidigital number, since it uses as much as digits as its factorization.

85625879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 85625879 is about 9253.4252577086. The cubic root of 85625879 is about 440.7594991983.

It can be divided in two parts, 8562 and 5879, that added together give a palindrome (14441).

The spelling of 85625879 in words is "eighty-five million, six hundred twenty-five thousand, eight hundred seventy-nine".