1803425 has 24 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 1281600.

The previous prime is 1803421. The next prime is 1803449. The reversal of 1803425 is 5243081.

It is not a de Polignac number, because 1803425 - 2² = 1803421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1803425.

It is not an unprimeable number, because it can be changed into a prime (1803421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9986 + ... + 10164.

It is an arithmetic number, because the mean of its divisors is an integer number (104160).

2^1803425 is an apocalyptic number.

It is an amenable number.

1803425 is a deficient number, since it is larger than the sum of its proper divisors (696415).

1803425 is a wasteful number, since it uses less digits than its factorization.

1803425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1803425 is about 1342.9166020271. The cubic root of 1803425 is about 121.7211448862.

The spelling of 1803425 in words is "one million, eight hundred three thousand, four hundred twenty-five".