85525648829 has 2 divisors, whose sum is σ = 85525648830. Its totient is φ = 85525648828.

The previous prime is 85525648799. The next prime is 85525648877. The reversal of 85525648829 is 92884652558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44609664100 + 40915984729 = 211210^2 + 202277^2 .

It is a cyclic number.

It is not a de Polignac number, because 85525648829 - 2⁸ = 85525648573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85525647829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42762824414 + 42762824415.

It is an arithmetic number, because the mean of its divisors is an integer number (42762824415).

Almost surely, 2^85525648829 is an apocalyptic number.

It is an amenable number.

85525648829 is a deficient number, since it is larger than the sum of its proper divisors (1).

85525648829 is an equidigital number, since it uses as much as digits as its factorization.

85525648829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296000, while the sum is 62.

The spelling of 85525648829 in words is "eighty-five billion, five hundred twenty-five million, six hundred forty-eight thousand, eight hundred twenty-nine".