85725503786 has 32 divisors (see below), whose sum is σ = 142072990416. Its totient is φ = 38541888000.

The previous prime is 85725503779. The next prime is 85725503803. The reversal of 85725503786 is 68730552758.

It can be written as a sum of positive squares in 8 ways, for example, as 22438542025 + 63286961761 = 149795^2 + 251569^2 .

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 643796 + ... + 765456.

Almost surely, 2^85725503786 is an apocalyptic number.

85725503786 is a deficient number, since it is larger than the sum of its proper divisors (56347486630).

85725503786 is a wasteful number, since it uses less digits than its factorization.

85725503786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122378.

The product of its (nonzero) digits is 14112000, while the sum is 56.

The spelling of 85725503786 in words is "eighty-five billion, seven hundred twenty-five million, five hundred three thousand, seven hundred eighty-six".