85615265 has 4 divisors (see below), whose sum is σ = 102738324. Its totient is φ = 68492208.

The previous prime is 85615259. The next prime is 85615267. The reversal of 85615265 is 56251658.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68442529 + 17172736 = 8273^2 + 4144^2 .

It is a cyclic number.

It is not a de Polignac number, because 85615265 - 2²⁰ = 84566689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85615267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8561522 + ... + 8561531.

It is an arithmetic number, because the mean of its divisors is an integer number (25684581).

Almost surely, 2^85615265 is an apocalyptic number.

It is an amenable number.

85615265 is a deficient number, since it is larger than the sum of its proper divisors (17123059).

85615265 is a wasteful number, since it uses less digits than its factorization.

85615265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17123058.

The product of its digits is 72000, while the sum is 38.

The square root of 85615265 is about 9252.8517225772. The cubic root of 85615265 is about 440.7412865789.

The spelling of 85615265 in words is "eighty-five million, six hundred fifteen thousand, two hundred sixty-five".