1825321 has 4 divisors (see below), whose sum is σ = 1874692. Its totient is φ = 1775952.

The previous prime is 1825319. The next prime is 1825331. The reversal of 1825321 is 1235281.

1825321 = T₁₂₃ + T₁₂₄ + ... + T₂₃₃.

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 1755625 + 69696 = 1325^2 + 264^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825321 - 2¹ = 1825319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1825292 and 1825301.

It is not an unprimeable number, because it can be changed into a prime (1825331) 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, 24630 + ... + 24703.

It is an arithmetic number, because the mean of its divisors is an integer number (468673).

2^1825321 is an apocalyptic number.

It is an amenable number.

1825321 is a deficient number, since it is larger than the sum of its proper divisors (49371).

1825321 is an equidigital number, since it uses as much as digits as its factorization.

1825321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49370.

The product of its digits is 480, while the sum is 22.

The square root of 1825321 is about 1351.0444108171. The cubic root of 1825321 is about 122.2117838958.

The spelling of 1825321 in words is "one million, eight hundred twenty-five thousand, three hundred twenty-one".