85625471 has 2 divisors, whose sum is σ = 85625472. Its totient is φ = 85625470.

The previous prime is 85625347. The next prime is 85625473. The reversal of 85625471 is 17452658.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85625471 is a prime.

It is a super-3 number, since 3×85625471³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 85625473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85625473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42812735 + 42812736.

It is an arithmetic number, because the mean of its divisors is an integer number (42812736).

Almost surely, 2^85625471 is an apocalyptic number.

85625471 is a deficient number, since it is larger than the sum of its proper divisors (1).

85625471 is an equidigital number, since it uses as much as digits as its factorization.

85625471 is an odious number, because the sum of its binary digits is odd.

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

The square root of 85625471 is about 9253.4032117919. The cubic root of 85625471 is about 440.7587991367.

The spelling of 85625471 in words is "eighty-five million, six hundred twenty-five thousand, four hundred seventy-one".