1825855 has 8 divisors (see below), whose sum is σ = 2286432. Its totient is φ = 1397088.

The previous prime is 1825829. The next prime is 1825861. The reversal of 1825855 is 5585281.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1825855 - 2¹³ = 1817663 is a prime.

It is a super-3 number, since 3×1825855³ = 18260813043335704125, which contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1825855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7824 + ... + 8053.

It is an arithmetic number, because the mean of its divisors is an integer number (285804).

2^1825855 is an apocalyptic number.

1825855 is a deficient number, since it is larger than the sum of its proper divisors (460577).

1825855 is a wasteful number, since it uses less digits than its factorization.

1825855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15905.

The product of its digits is 16000, while the sum is 34.

The square root of 1825855 is about 1351.2420212530. The cubic root of 1825855 is about 122.2237004719.

The spelling of 1825855 in words is "one million, eight hundred twenty-five thousand, eight hundred fifty-five".