1808025 has 12 divisors (see below), whose sum is σ = 2989392. Its totient is φ = 964240.

The previous prime is 1808017. The next prime is 1808029. The reversal of 1808025 is 5208081.

It is not a de Polignac number, because 1808025 - 2³ = 1808017 is a prime.

1808025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1807986 and 1808004.

It is not an unprimeable number, because it can be changed into a prime (1808029) 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, 11979 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (249116).

2^1808025 is an apocalyptic number.

1808025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1808025 is a deficient number, since it is larger than the sum of its proper divisors (1181367).

1808025 is a wasteful number, since it uses less digits than its factorization.

1808025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24120 (or 24115 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 1808025 is about 1344.6282013999. The cubic root of 1808025 is about 121.8245484802.

The spelling of 1808025 in words is "one million, eight hundred eight thousand, twenty-five".