85855525 has 24 divisors (see below), whose sum is σ = 128831040. Its totient is φ = 55407360.

The previous prime is 85855513. The next prime is 85855529. The reversal of 85855525 is 52555858.

It is not a de Polignac number, because 85855525 - 2⁵ = 85855493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85855529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11455 + ... + 17404.

It is an arithmetic number, because the mean of its divisors is an integer number (5367960).

Almost surely, 2^85855525 is an apocalyptic number.

85855525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85855525 is a deficient number, since it is larger than the sum of its proper divisors (42975515).

85855525 is a wasteful number, since it uses less digits than its factorization.

85855525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28893 (or 28888 counting only the distinct ones).

The product of its digits is 400000, while the sum is 43.

The square root of 85855525 is about 9265.8256512844. The cubic root of 85855525 is about 441.1531819776.

The spelling of 85855525 in words is "eighty-five million, eight hundred fifty-five thousand, five hundred twenty-five".