2520228605 has 4 divisors (see below), whose sum is σ = 3024274332. Its totient is φ = 2016182880.

The previous prime is 2520228593. The next prime is 2520228629. The reversal of 2520228605 is 5068220252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 446519161 + 2073709444 = 21131^2 + 45538^2 .

It is not a de Polignac number, because 2520228605 - 2⁶ = 2520228541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252022856 + ... + 252022865.

It is an arithmetic number, because the mean of its divisors is an integer number (756068583).

Almost surely, 2^2520228605 is an apocalyptic number.

It is an amenable number.

2520228605 is a deficient number, since it is larger than the sum of its proper divisors (504045727).

2520228605 is an equidigital number, since it uses as much as digits as its factorization.

2520228605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504045726.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 2520228605 is about 50201.8785007095. The cubic root of 2520228605 is about 1360.8595714035.

Adding to 2520228605 its reverse (5068220252), we get a palindrome (7588448857).

The spelling of 2520228605 in words is "two billion, five hundred twenty million, two hundred twenty-eight thousand, six hundred five".