85522657505 has 16 divisors (see below), whose sum is σ = 103209719184. Its totient is φ = 68030188800.

The previous prime is 85522657477. The next prime is 85522657513. The reversal of 85522657505 is 50575622558.

It can be written as a sum of positive squares in 8 ways, for example, as 25482304 + 85497175201 = 5048^2 + 292399^2 .

It is not a de Polignac number, because 85522657505 - 2¹⁰ = 85522656481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1681955 + ... + 1732055.

It is an arithmetic number, because the mean of its divisors is an integer number (6450607449).

Almost surely, 2^85522657505 is an apocalyptic number.

It is an amenable number.

85522657505 is a deficient number, since it is larger than the sum of its proper divisors (17687061679).

85522657505 is a wasteful number, since it uses less digits than its factorization.

85522657505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52036.

The product of its (nonzero) digits is 4200000, while the sum is 50.

The spelling of 85522657505 in words is "eighty-five billion, five hundred twenty-two million, six hundred fifty-seven thousand, five hundred five".