2565837 has 12 divisors (see below), whose sum is σ = 3843840. Its totient is φ = 1710396.

The previous prime is 2565809. The next prime is 2565847. The reversal of 2565837 is 7385652.

It is not a de Polignac number, because 2565837 - 2⁷ = 2565709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5037 + ... + 5522.

It is an arithmetic number, because the mean of its divisors is an integer number (320320).

2^2565837 is an apocalyptic number.

2565837 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2565837 is a deficient number, since it is larger than the sum of its proper divisors (1278003).

2565837 is an equidigital number, since it uses as much as digits as its factorization.

2565837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10574 (or 10562 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 2565837 is about 1601.8230239324. The cubic root of 2565837 is about 136.9019669141.

The spelling of 2565837 in words is "two million, five hundred sixty-five thousand, eight hundred thirty-seven".