1816025 has 12 divisors (see below), whose sum is σ = 2384892. Its totient is φ = 1367040.

The previous prime is 1816007. The next prime is 1816027. The reversal of 1816025 is 5206181.

It can be written as a sum of positive squares in 6 ways, for example, as 23104 + 1792921 = 152^2 + 1339^2 .

It is not a de Polignac number, because 1816025 - 2¹⁰ = 1815001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1816027) 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, 1712 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (198741).

2^1816025 is an apocalyptic number.

It is an amenable number.

1816025 is a deficient number, since it is larger than the sum of its proper divisors (568867).

1816025 is a wasteful number, since it uses less digits than its factorization.

1816025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300 (or 4295 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1816025 is about 1347.5997180172. The cubic root of 1816025 is about 122.0039638594.

The spelling of 1816025 in words is "one million, eight hundred sixteen thousand, twenty-five".