85725144 has 48 divisors (see below), whose sum is σ = 237580200. Its totient is φ = 27909504.

The previous prime is 85725119. The next prime is 85725161. The reversal of 85725144 is 44152758.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 85725099 and 85725108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10749 + ... + 16940.

Almost surely, 2^85725144 is an apocalyptic number.

It is an amenable number.

85725144 is an abundant number, since it is smaller than the sum of its proper divisors (151855056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85725144 is a wasteful number, since it uses less digits than its factorization.

85725144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27744 (or 27737 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 85725144 is about 9258.7873936061. The cubic root of 85725144 is about 440.9297557299.

The spelling of 85725144 in words is "eighty-five million, seven hundred twenty-five thousand, one hundred forty-four".