851725 has 24 divisors (see below), whose sum is σ = 1253888. Its totient is φ = 561600.

The previous prime is 851723. The next prime is 851731. The reversal of 851725 is 527158.

It is not a de Polignac number, because 851725 - 2¹ = 851723 is a prime.

Its product of digits (2800) is a multiple of the sum of its prime divisors (200).

It is a junction number, because it is equal to n+sod(n) for n = 851693 and 851702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851723) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5347 + ... + 5503.

2⁸⁵¹⁷²⁵ is an apocalyptic number.

It is an amenable number.

851725 is a deficient number, since it is larger than the sum of its proper divisors (402163).

851725 is a wasteful number, since it uses less digits than its factorization.

851725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 200 counting only the distinct ones).

The product of its digits is 2800, while the sum is 28.

The square root of 851725 is about 922.8894841746. The cubic root of 851725 is about 94.7908603294.

The spelling of 851725 in words is "eight hundred fifty-one thousand, seven hundred twenty-five".