2564503585 has 8 divisors (see below), whose sum is σ = 3517033536. Its totient is φ = 1758516720.

The previous prime is 2564503537. The next prime is 2564503621. The reversal of 2564503585 is 5853054652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2564503585 - 2²¹ = 2562406433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36635731 + ... + 36635800.

It is an arithmetic number, because the mean of its divisors is an integer number (439629192).

Almost surely, 2^2564503585 is an apocalyptic number.

It is an amenable number.

2564503585 is a deficient number, since it is larger than the sum of its proper divisors (952529951).

2564503585 is an equidigital number, since it uses as much as digits as its factorization.

2564503585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73271543.

The product of its (nonzero) digits is 720000, while the sum is 43.

The square root of 2564503585 is about 50640.9279634566. The cubic root of 2564503585 is about 1368.7824771872.

The spelling of 2564503585 in words is "two billion, five hundred sixty-four million, five hundred three thousand, five hundred eighty-five".