1805125 has 16 divisors (see below), whose sum is σ = 2575872. Its totient is φ = 1237200.

The previous prime is 1805123. The next prime is 1805137. The reversal of 1805125 is 5215081.

It is not a de Polignac number, because 1805125 - 2¹ = 1805123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1805096 and 1805105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1805123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157 + ... + 1906.

It is an arithmetic number, because the mean of its divisors is an integer number (160992).

2^1805125 is an apocalyptic number.

It is an amenable number.

1805125 is a deficient number, since it is larger than the sum of its proper divisors (770747).

1805125 is an equidigital number, since it uses as much as digits as its factorization.

1805125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1805125 is about 1343.5494036320. The cubic root of 1805125 is about 121.7593797192.

It can be divided in two parts, 1805 and 125, that multiplied together give a square (225625 = 475²).

The spelling of 1805125 in words is "one million, eight hundred five thousand, one hundred twenty-five".