1325811 has 4 divisors (see below), whose sum is σ = 1767752. Its totient is φ = 883872.

The previous prime is 1325803. The next prime is 1325861. The reversal of 1325811 is 1185231.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1325811 - 2³ = 1325803 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325861) 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, 220966 + ... + 220971.

It is an arithmetic number, because the mean of its divisors is an integer number (441938).

2^1325811 is an apocalyptic number.

1325811 is a deficient number, since it is larger than the sum of its proper divisors (441941).

1325811 is an equidigital number, since it uses as much as digits as its factorization.

1325811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441940.

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

The square root of 1325811 is about 1151.4386653226. The cubic root of 1325811 is about 109.8568661743.

The spelling of 1325811 in words is "one million, three hundred twenty-five thousand, eight hundred eleven".