1881325 has 6 divisors (see below), whose sum is σ = 2332874. Its totient is φ = 1505040.

The previous prime is 1881311. The next prime is 1881329. The reversal of 1881325 is 5231881.

It can be written as a sum of positive squares in 3 ways, for example, as 227529 + 1653796 = 477^2 + 1286^2 .

It is not a de Polignac number, because 1881325 - 2⁷ = 1881197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1881293 and 1881302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881329) 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 5 ways as a sum of consecutive naturals, for example, 37602 + ... + 37651.

2^1881325 is an apocalyptic number.

It is an amenable number.

1881325 is a deficient number, since it is larger than the sum of its proper divisors (451549).

1881325 is an equidigital number, since it uses as much as digits as its factorization.

1881325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75263 (or 75258 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 1881325 is about 1371.6140127601. The cubic root of 1881325 is about 123.4491040205.

The spelling of 1881325 in words is "one million, eight hundred eighty-one thousand, three hundred twenty-five".