85005764125 has 8 divisors (see below), whose sum is σ = 106087193784. Its totient is φ = 68004611200.

The previous prime is 85005764083. The next prime is 85005764159. The reversal of 85005764125 is 52146750058.

It can be written as a sum of positive squares in 4 ways, for example, as 4972788324 + 80032975801 = 70518^2 + 282901^2 .

It is not a de Polignac number, because 85005764125 - 2²³ = 84997375517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 340022932 + ... + 340023181.

It is an arithmetic number, because the mean of its divisors is an integer number (13260899223).

Almost surely, 2^85005764125 is an apocalyptic number.

It is an amenable number.

85005764125 is a deficient number, since it is larger than the sum of its proper divisors (21081429659).

85005764125 is an equidigital number, since it uses as much as digits as its factorization.

85005764125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680046128 (or 680046118 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 85005764125 in words is "eighty-five billion, five million, seven hundred sixty-four thousand, one hundred twenty-five".