2405520811 has 2 divisors, whose sum is σ = 2405520812. Its totient is φ = 2405520810.

The previous prime is 2405520809. The next prime is 2405520823. The reversal of 2405520811 is 1180255042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2405520811 - 2¹ = 2405520809 is a prime.

Together with 2405520809, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2405520811.

It is not a weakly prime, because it can be changed into another prime (2405520841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202760405 + 1202760406.

It is an arithmetic number, because the mean of its divisors is an integer number (1202760406).

Almost surely, 2^2405520811 is an apocalyptic number.

2405520811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405520811 is an equidigital number, since it uses as much as digits as its factorization.

2405520811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 2405520811 is about 49046.1090301769. The cubic root of 2405520811 is about 1339.8917286471.

Adding to 2405520811 its reverse (1180255042), we get a palindrome (3585775853).

The spelling of 2405520811 in words is "two billion, four hundred five million, five hundred twenty thousand, eight hundred eleven".