1806725 has 6 divisors (see below), whose sum is σ = 2240370. Its totient is φ = 1445360.

The previous prime is 1806713. The next prime is 1806733. The reversal of 1806725 is 5276081.

It can be written as a sum of positive squares in 3 ways, for example, as 45796 + 1760929 = 214^2 + 1327^2 .

It is not a de Polignac number, because 1806725 - 2¹⁰ = 1805701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36110 + ... + 36159.

It is an arithmetic number, because the mean of its divisors is an integer number (373395).

2^1806725 is an apocalyptic number.

It is an amenable number.

1806725 is a deficient number, since it is larger than the sum of its proper divisors (433645).

1806725 is an equidigital number, since it uses as much as digits as its factorization.

1806725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72279 (or 72274 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1806725 is about 1344.1447094714. The cubic root of 1806725 is about 121.7953435216.

The spelling of 1806725 in words is "one million, eight hundred six thousand, seven hundred twenty-five".