2564989552 has 20 divisors (see below), whose sum is σ = 4974272896. Its totient is φ = 1281306240.

The previous prime is 2564989543. The next prime is 2564989571. The reversal of 2564989552 is 2559894652.

It is a junction number, because it is equal to n+sod(n) for n = 2564989493 and 2564989502.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 56349 + ... + 91132.

Almost surely, 2^2564989552 is an apocalyptic number.

It is an amenable number.

2564989552 is a deficient number, since it is larger than the sum of its proper divisors (2409283344).

2564989552 is a wasteful number, since it uses less digits than its factorization.

2564989552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148576 (or 148570 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 55.

The square root of 2564989552 is about 50645.7259006128. The cubic root of 2564989552 is about 1368.8689320090.

The spelling of 2564989552 in words is "two billion, five hundred sixty-four million, nine hundred eighty-nine thousand, five hundred fifty-two".