2545564516 has 24 divisors (see below), whose sum is σ = 4918271904. Its totient is φ = 1143132480.

The previous prime is 2545564477. The next prime is 2545564519. The reversal of 2545564516 is 6154655452.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2545564519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344865 + ... + 352168.

It is an arithmetic number, because the mean of its divisors is an integer number (204927996).

Almost surely, 2^2545564516 is an apocalyptic number.

It is an amenable number.

2545564516 is a deficient number, since it is larger than the sum of its proper divisors (2372707388).

2545564516 is a wasteful number, since it uses less digits than its factorization.

2545564516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697131 (or 697129 counting only the distinct ones).

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

The square root of 2545564516 is about 50453.5877416066. The cubic root of 2545564516 is about 1365.4046246867.

The spelling of 2545564516 in words is "two billion, five hundred forty-five million, five hundred sixty-four thousand, five hundred sixteen".