1811325 has 12 divisors (see below), whose sum is σ = 2994848. Its totient is φ = 966000.

The previous prime is 1811323. The next prime is 1811347. The reversal of 1811325 is 5231181.

It is not a de Polignac number, because 1811325 - 2¹ = 1811323 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1811321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12001 + ... + 12150.

2^1811325 is an apocalyptic number.

1811325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1811325 is a deficient number, since it is larger than the sum of its proper divisors (1183523).

1811325 is a wasteful number, since it uses less digits than its factorization.

1811325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24164 (or 24159 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 1811325 is about 1345.8547469917. The cubic root of 1811325 is about 121.8986213255.

The spelling of 1811325 in words is "one million, eight hundred eleven thousand, three hundred twenty-five".