1825685 has 4 divisors (see below), whose sum is σ = 2190828. Its totient is φ = 1460544.

The previous prime is 1825679. The next prime is 1825687. The reversal of 1825685 is 5865281.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 1196836 = 793^2 + 1094^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825685 - 2⁸ = 1825429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182564 + ... + 182573.

It is an arithmetic number, because the mean of its divisors is an integer number (547707).

2^1825685 is an apocalyptic number.

It is an amenable number.

1825685 is a deficient number, since it is larger than the sum of its proper divisors (365143).

1825685 is an equidigital number, since it uses as much as digits as its factorization.

1825685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365142.

The product of its digits is 19200, while the sum is 35.

The square root of 1825685 is about 1351.1791146995. The cubic root of 1825685 is about 122.2199070575.

The spelling of 1825685 in words is "one million, eight hundred twenty-five thousand, six hundred eighty-five".