85205725 has 24 divisors (see below), whose sum is σ = 116680032. Its totient is φ = 61204800.

The previous prime is 85205713. The next prime is 85205737. The reversal of 85205725 is 52750258.

It is an interprime number because it is at equal distance from previous prime (85205713) and next prime (85205737).

It is not a de Polignac number, because 85205725 - 2¹³ = 85197533 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 20959 + ... + 24691.

It is an arithmetic number, because the mean of its divisors is an integer number (4861668).

Almost surely, 2^85205725 is an apocalyptic number.

It is an amenable number.

85205725 is a deficient number, since it is larger than the sum of its proper divisors (31474307).

85205725 is a wasteful number, since it uses less digits than its factorization.

85205725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837 (or 3832 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 85205725 is about 9230.6947192506. The cubic root of 85205725 is about 440.0374021236.

The spelling of 85205725 in words is "eighty-five million, two hundred five thousand, seven hundred twenty-five".