2520288305 has 16 divisors (see below), whose sum is σ = 3049646544. Its totient is φ = 1999395840.

The previous prime is 2520288271. The next prime is 2520288311. The reversal of 2520288305 is 5038820252.

It can be written as a sum of positive squares in 8 ways, for example, as 19088161 + 2501200144 = 4369^2 + 50012^2 .

It is not a de Polignac number, because 2520288305 - 2²² = 2516094001 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 1103765 + ... + 1106045.

It is an arithmetic number, because the mean of its divisors is an integer number (190602909).

Almost surely, 2^2520288305 is an apocalyptic number.

It is an amenable number.

2520288305 is a deficient number, since it is larger than the sum of its proper divisors (529358239).

2520288305 is a wasteful number, since it uses less digits than its factorization.

2520288305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 2520288305 is about 50202.4730964521. The cubic root of 2520288305 is about 1360.8703168143.

The spelling of 2520288305 in words is "two billion, five hundred twenty million, two hundred eighty-eight thousand, three hundred five".