1836025 has 9 divisors (see below), whose sum is σ = 2285103.
Its totient is φ = 1463400.
The previous prime is 1836011. The next prime is 1836031. The reversal of 1836025 is 5206381.
It is a happy number.
The square root of 1836025 is 1355.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 660969 + 1175056 = 813^2 + 1084^2
It is not a de Polignac number, because 1836025 - 25 = 1835993 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (25).
It is a Duffinian number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6640 + ... + 6910.
21836025 is an apocalyptic number.
1836025 is the 1355-th square number.
1836025 is the 678-th centered octagonal number.
It is an amenable number.
1836025 is a deficient number, since it is larger than the sum of its proper divisors (449078).
1836025 is an frugal number, since it uses more digits than its factorization.
1836025 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 552 (or 276 counting only the distinct ones).
The product of its (nonzero) digits is 1440, while the sum is 25.
The cubic root of 1836025 is about 122.4502088359.
Multiplying 1836025 by its sum of digits (25), we get a square (45900625 = 67752).
1836025 divided by its sum of digits (25) gives a square (73441 = 2712).
The spelling of 1836025 in words is "one million, eight hundred thirty-six thousand, twenty-five".