845281125 has 96 divisors (see below), whose sum is σ = 1698409440. Its totient is φ = 401587200.

The previous prime is 845281117. The next prime is 845281127. The reversal of 845281125 is 521182548.

845281125 is a `hidden beast` number, since 8 + 4 + 528 + 1 + 125 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 643839876 + 201441249 = 25374^2 + 14193^2 .

It is not a de Polignac number, because 845281125 - 2³ = 845281117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845281125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845281127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 423129 + ... + 425121.

It is an arithmetic number, because the mean of its divisors is an integer number (17691765).

Almost surely, 2^845281125 is an apocalyptic number.

It is an amenable number.

845281125 is an abundant number, since it is smaller than the sum of its proper divisors (853128315).

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

845281125 is a wasteful number, since it uses less digits than its factorization.

845281125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056 (or 2043 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 845281125 is about 29073.7188023823. The cubic root of 845281125 is about 945.5120262073.

The spelling of 845281125 in words is "eight hundred forty-five million, two hundred eighty-one thousand, one hundred twenty-five".