85285058257 has 12 divisors (see below), whose sum is σ = 99214482036. Its totient is φ = 73097549280.

The previous prime is 85285058231. The next prime is 85285058267. The reversal of 85285058257 is 75285058258.

It can be written as a sum of positive squares in 2 ways, for example, as 49078199296 + 36206858961 = 221536^2 + 190281^2 .

It is not a de Polignac number, because 85285058257 - 2³¹ = 83137574609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85285058198 and 85285058207.

It is not an unprimeable number, because it can be changed into a prime (85285058267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1221463 + ... + 1289395.

It is an arithmetic number, because the mean of its divisors is an integer number (8267873503).

Almost surely, 2^85285058257 is an apocalyptic number.

It is an amenable number.

85285058257 is a deficient number, since it is larger than the sum of its proper divisors (13929423779).

85285058257 is a wasteful number, since it uses less digits than its factorization.

85285058257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93568 (or 93561 counting only the distinct ones).

The product of its (nonzero) digits is 8960000, while the sum is 55.

Subtracting from 85285058257 its reverse (75285058258), we obtain a palindrome (9999999999).

The spelling of 85285058257 in words is "eighty-five billion, two hundred eighty-five million, fifty-eight thousand, two hundred fifty-seven".