2405520520 has 32 divisors (see below), whose sum is σ = 5828762520. Its totient is φ = 888192000.

The previous prime is 2405520499. The next prime is 2405520571. The reversal of 2405520520 is 250255042.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 861187716 + 1544332804 = 29346^2 + 39298^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2312481 + ... + 2313520.

Almost surely, 2^2405520520 is an apocalyptic number.

2405520520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2405520520 is an abundant number, since it is smaller than the sum of its proper divisors (3423242000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2405520520 is a wasteful number, since it uses less digits than its factorization.

2405520520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4626025 (or 4626021 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 2405520520 is about 49046.1060635806. The cubic root of 2405520520 is about 1339.8916746174.

Adding to 2405520520 its reverse (250255042), we get a palindrome (2655775562).

The spelling of 2405520520 in words is "two billion, four hundred five million, five hundred twenty thousand, five hundred twenty".