85425941773 has 2 divisors, whose sum is σ = 85425941774. Its totient is φ = 85425941772.

The previous prime is 85425941761. The next prime is 85425941791. The reversal of 85425941773 is 37714952458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45839666404 + 39586275369 = 214102^2 + 198963^2 .

It is a cyclic number.

It is not a de Polignac number, because 85425941773 - 2¹³ = 85425933581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85425941723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42712970886 + 42712970887.

It is an arithmetic number, because the mean of its divisors is an integer number (42712970887).

Almost surely, 2^85425941773 is an apocalyptic number.

It is an amenable number.

85425941773 is a deficient number, since it is larger than the sum of its proper divisors (1).

85425941773 is an equidigital number, since it uses as much as digits as its factorization.

85425941773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8467200, while the sum is 55.

The spelling of 85425941773 in words is "eighty-five billion, four hundred twenty-five million, nine hundred forty-one thousand, seven hundred seventy-three".