2565220567 has 64 divisors (see below), whose sum is σ = 3413975040. Its totient is φ = 1872313344.

The previous prime is 2565220561. The next prime is 2565220583. The reversal of 2565220567 is 7650225652.

It is a happy number.

2565220567 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 2565220567 - 2⁷ = 2565220439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565220561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8754873 + ... + 8755165.

It is an arithmetic number, because the mean of its divisors is an integer number (53343360).

Almost surely, 2^2565220567 is an apocalyptic number.

2565220567 is a deficient number, since it is larger than the sum of its proper divisors (848754473).

2565220567 is a wasteful number, since it uses less digits than its factorization.

2565220567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 2565220567 is about 50648.0065451741. The cubic root of 2565220567 is about 1368.9100263626.

The spelling of 2565220567 in words is "two billion, five hundred sixty-five million, two hundred twenty thousand, five hundred sixty-seven".