2565913 has 8 divisors (see below), whose sum is σ = 3012032. Its totient is φ = 2139696.

The previous prime is 2565907. The next prime is 2565917. The reversal of 2565913 is 3195652.

2565913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2565913 - 2⁵ = 2565881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4695 + ... + 5212.

It is an arithmetic number, because the mean of its divisors is an integer number (376504).

2^2565913 is an apocalyptic number.

It is an amenable number.

2565913 is a deficient number, since it is larger than the sum of its proper divisors (446119).

2565913 is an equidigital number, since it uses as much as digits as its factorization.

2565913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9951.

The product of its digits is 8100, while the sum is 31.

The square root of 2565913 is about 1601.8467467270. The cubic root of 2565913 is about 136.9033185779.

The spelling of 2565913 in words is "two million, five hundred sixty-five thousand, nine hundred thirteen".