85225771 has 2 divisors, whose sum is σ = 85225772. Its totient is φ = 85225770.

The previous prime is 85225739. The next prime is 85225781. The reversal of 85225771 is 17752258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85225771 - 2⁵ = 85225739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85225771.

It is not a weakly prime, because it can be changed into another prime (85225781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42612885 + 42612886.

It is an arithmetic number, because the mean of its divisors is an integer number (42612886).

Almost surely, 2^85225771 is an apocalyptic number.

85225771 is a deficient number, since it is larger than the sum of its proper divisors (1).

85225771 is an equidigital number, since it uses as much as digits as its factorization.

85225771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 37.

The square root of 85225771 is about 9231.7804891581. The cubic root of 85225771 is about 440.0719080135.

The spelling of 85225771 in words is "eighty-five million, two hundred twenty-five thousand, seven hundred seventy-one".