2520564885 has 56 divisors (see below), whose sum is σ = 4582336920. Its totient is φ = 1330255872.

The previous prime is 2520564881. The next prime is 2520564887. The reversal of 2520564885 is 5884650252.

It is a happy number.

2520564885 is a `hidden beast` number, since 2 + 5 + 2 + 0 + 564 + 8 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 318515409 + 2202049476 = 17847^2 + 46926^2 .

It is not a de Polignac number, because 2520564885 - 2² = 2520564881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520564885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520564881) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 350001 + ... + 357129.

It is an arithmetic number, because the mean of its divisors is an integer number (81827445).

Almost surely, 2^2520564885 is an apocalyptic number.

It is an amenable number.

2520564885 is a deficient number, since it is larger than the sum of its proper divisors (2061772035).

2520564885 is an frugal number, since it uses more digits than its factorization.

2520564885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249 (or 7234 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The square root of 2520564885 is about 50205.2276660509. The cubic root of 2520564885 is about 1360.9200962706.

The spelling of 2520564885 in words is "two billion, five hundred twenty million, five hundred sixty-four thousand, eight hundred eighty-five".