2564540432 has 10 divisors (see below), whose sum is σ = 4968797118. Its totient is φ = 1282270208.

The previous prime is 2564540431. The next prime is 2564540449. The reversal of 2564540432 is 2340454652.

It can be written as a sum of positive squares in only one way, i.e., 2151475456 + 413064976 = 46384^2 + 20324^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2564540392 and 2564540401.

It is not an unprimeable number, because it can be changed into a prime (2564540431) by changing a digit.

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 as a sum of consecutive naturals, namely, 80141873 + ... + 80141904.

Almost surely, 2^2564540432 is an apocalyptic number.

It is an amenable number.

2564540432 is a deficient number, since it is larger than the sum of its proper divisors (2404256686).

2564540432 is a wasteful number, since it uses less digits than its factorization.

2564540432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160283785 (or 160283779 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

The square root of 2564540432 is about 50641.2917686743. The cubic root of 2564540432 is about 1368.7890327491.

The spelling of 2564540432 in words is "two billion, five hundred sixty-four million, five hundred forty thousand, four hundred thirty-two".