85725607289 has 16 divisors (see below), whose sum is σ = 99411236736. Its totient is φ = 72406656000.

The previous prime is 85725607271. The next prime is 85725607307. The reversal of 85725607289 is 98270652758.

It is an interprime number because it is at equal distance from previous prime (85725607271) and next prime (85725607307).

It is not a de Polignac number, because 85725607289 - 2¹² = 85725603193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85725607189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138152 + ... + 436505.

It is an arithmetic number, because the mean of its divisors is an integer number (6213202296).

Almost surely, 2^85725607289 is an apocalyptic number.

It is an amenable number.

85725607289 is a deficient number, since it is larger than the sum of its proper divisors (13685629447).

85725607289 is a wasteful number, since it uses less digits than its factorization.

85725607289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574976.

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 85725607289 in words is "eighty-five billion, seven hundred twenty-five million, six hundred seven thousand, two hundred eighty-nine".