2565605151 has 16 divisors (see below), whose sum is σ = 3801676800. Its totient is φ = 1710052344.

The previous prime is 2565605143. The next prime is 2565605153. The reversal of 2565605151 is 1515065652.

2565605151 is a `hidden beast` number, since 25 + 65 + 60 + 515 + 1 = 666.

2565605151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2565605151 - 2³ = 2565605143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565605153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249820 + ... + 259886.

It is an arithmetic number, because the mean of its divisors is an integer number (237604800).

Almost surely, 2^2565605151 is an apocalyptic number.

2565605151 is a deficient number, since it is larger than the sum of its proper divisors (1236071649).

2565605151 is a wasteful number, since it uses less digits than its factorization.

2565605151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19515 (or 19509 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 2565605151 is about 50651.8030379966. The cubic root of 2565605151 is about 1368.9784330321.

The spelling of 2565605151 in words is "two billion, five hundred sixty-five million, six hundred five thousand, one hundred fifty-one".