2564255632 has 20 divisors (see below), whose sum is σ = 5139565020. Its totient is φ = 1237916288.

The previous prime is 2564255623. The next prime is 2564255633. The reversal of 2564255632 is 2365524652.

It can be written as a sum of positive squares in 2 ways, for example, as 1535385856 + 1028869776 = 39184^2 + 32076^2 .

It is not an unprimeable number, because it can be changed into a prime (2564255633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762743 + ... + 2763670.

It is an arithmetic number, because the mean of its divisors is an integer number (256978251).

Almost surely, 2^2564255632 is an apocalyptic number.

It is an amenable number.

2564255632 is an abundant number, since it is smaller than the sum of its proper divisors (2575309388).

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

2564255632 is a wasteful number, since it uses less digits than its factorization.

2564255632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5526450 (or 5526444 counting only the distinct ones).

The product of its digits is 432000, while the sum is 40.

The square root of 2564255632 is about 50638.4797560116. The cubic root of 2564255632 is about 1368.7383614809.

The spelling of 2564255632 in words is "two billion, five hundred sixty-four million, two hundred fifty-five thousand, six hundred thirty-two".