845725 has 6 divisors (see below), whose sum is σ = 1048730. Its totient is φ = 676560.

The previous prime is 845723. The next prime is 845729. The reversal of 845725 is 527548.

It can be written as a sum of positive squares in 3 ways, for example, as 109561 + 736164 = 331^2 + 858^2 .

It is not a de Polignac number, because 845725 - 2¹ = 845723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845723) 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 5 ways as a sum of consecutive naturals, for example, 16890 + ... + 16939.

2⁸⁴⁵⁷²⁵ is an apocalyptic number.

It is an amenable number.

845725 is a deficient number, since it is larger than the sum of its proper divisors (203005).

845725 is a wasteful number, since it uses less digits than its factorization.

845725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33839 (or 33834 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 845725 is about 919.6330790049. The cubic root of 845725 is about 94.5677500035.

The spelling of 845725 in words is "eight hundred forty-five thousand, seven hundred twenty-five".