85225447 has 2 divisors, whose sum is σ = 85225448. Its totient is φ = 85225446.

The previous prime is 85225411. The next prime is 85225453. The reversal of 85225447 is 74452258.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85225447 - 2¹¹ = 85223399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85222447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42612723 + 42612724.

It is an arithmetic number, because the mean of its divisors is an integer number (42612724).

Almost surely, 2^85225447 is an apocalyptic number.

85225447 is a deficient number, since it is larger than the sum of its proper divisors (1).

85225447 is an equidigital number, since it uses as much as digits as its factorization.

85225447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 37.

The square root of 85225447 is about 9231.7629410639. The cubic root of 85225447 is about 440.0713503438.

The spelling of 85225447 in words is "eighty-five million, two hundred twenty-five thousand, four hundred forty-seven".