85397525 has 6 divisors (see below), whose sum is σ = 105892962. Its totient is φ = 68318000.

The previous prime is 85397513. The next prime is 85397531. The reversal of 85397525 is 52579358.

It can be written as a sum of positive squares in 3 ways, for example, as 1444 + 85396081 = 38^2 + 9241^2 .

It is not a de Polignac number, because 85397525 - 2⁴ = 85397509 is a prime.

It is a super-2 number, since 2×85397525² = 14585474552251250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1707926 + ... + 1707975.

It is an arithmetic number, because the mean of its divisors is an integer number (17648827).

Almost surely, 2^85397525 is an apocalyptic number.

It is an amenable number.

85397525 is a deficient number, since it is larger than the sum of its proper divisors (20495437).

85397525 is a wasteful number, since it uses less digits than its factorization.

85397525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415911 (or 3415906 counting only the distinct ones).

The product of its digits is 378000, while the sum is 44.

The square root of 85397525 is about 9241.0781297422. The cubic root of 85397525 is about 440.3673327108.

The spelling of 85397525 in words is "eighty-five million, three hundred ninety-seven thousand, five hundred twenty-five".