2565835 has 4 divisors (see below), whose sum is σ = 3079008. Its totient is φ = 2052664.

The previous prime is 2565809. The next prime is 2565847. The reversal of 2565835 is 5385652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2565835 - 2¹⁷ = 2434763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2565835.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256579 + ... + 256588.

It is an arithmetic number, because the mean of its divisors is an integer number (769752).

2^2565835 is an apocalyptic number.

2565835 is a deficient number, since it is larger than the sum of its proper divisors (513173).

2565835 is an equidigital number, since it uses as much as digits as its factorization.

2565835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513172.

The product of its digits is 36000, while the sum is 34.

The square root of 2565835 is about 1601.8223996436. The cubic root of 2565835 is about 136.9019313436.

The spelling of 2565835 in words is "two million, five hundred sixty-five thousand, eight hundred thirty-five".