1825385 has 8 divisors (see below), whose sum is σ = 2203656. Its totient is φ = 1451520.

The previous prime is 1825381. The next prime is 1825391. The reversal of 1825385 is 5835281.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53824 + 1771561 = 232^2 + 1331^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1825385 - 2² = 1825381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1825381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 1913.

It is an arithmetic number, because the mean of its divisors is an integer number (275457).

2^1825385 is an apocalyptic number.

It is an amenable number.

1825385 is a deficient number, since it is larger than the sum of its proper divisors (378271).

1825385 is a wasteful number, since it uses less digits than its factorization.

1825385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203.

The product of its digits is 9600, while the sum is 32.

The square root of 1825385 is about 1351.0680959892. The cubic root of 1825385 is about 122.2132122223.

The spelling of 1825385 in words is "one million, eight hundred twenty-five thousand, three hundred eighty-five".