1806025 has 12 divisors (see below), whose sum is σ = 2412172. Its totient is φ = 1333440.

The previous prime is 1806023. The next prime is 1806031. The reversal of 1806025 is 5206081.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7744 + 1798281 = 88^2 + 1341^2 .

It is not a de Polignac number, because 1806025 - 2¹ = 1806023 is a prime.

It is a Duffinian number.

1806025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1805987 and 1806005.

It is not an unprimeable number, because it can be changed into a prime (1806023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2454 + ... + 3103.

2^1806025 is an apocalyptic number.

It is an amenable number.

1806025 is a deficient number, since it is larger than the sum of its proper divisors (606147).

1806025 is a wasteful number, since it uses less digits than its factorization.

1806025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580 (or 5575 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1806025 is about 1343.8842956148. The cubic root of 1806025 is about 121.7796119717.

The spelling of 1806025 in words is "one million, eight hundred six thousand, twenty-five".