1825205 has 16 divisors (see below), whose sum is σ = 2352240. Its totient is φ = 1354752.

The previous prime is 1825193. The next prime is 1825207. The reversal of 1825205 is 5025281.

It can be written as a sum of positive squares in 8 ways, for example, as 418609 + 1406596 = 647^2 + 1186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825205 - 2⁶ = 1825141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9167 + ... + 9363.

It is an arithmetic number, because the mean of its divisors is an integer number (147015).

2^1825205 is an apocalyptic number.

It is an amenable number.

1825205 is a deficient number, since it is larger than the sum of its proper divisors (527035).

1825205 is a wasteful number, since it uses less digits than its factorization.

1825205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1825205 is about 1351.0014803841. The cubic root of 1825205 is about 122.2091949690.

The spelling of 1825205 in words is "one million, eight hundred twenty-five thousand, two hundred five".