2565429 has 4 divisors (see below), whose sum is σ = 3420576. Its totient is φ = 1710284.

The previous prime is 2565403. The next prime is 2565449. The reversal of 2565429 is 9245652.

2565429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2565429 - 2⁹ = 2564917 is a prime.

It is a D-number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 2565429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565449) 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 3 ways as a sum of consecutive naturals, for example, 427569 + ... + 427574.

It is an arithmetic number, because the mean of its divisors is an integer number (855144).

2^2565429 is an apocalyptic number.

It is an amenable number.

2565429 is a deficient number, since it is larger than the sum of its proper divisors (855147).

2565429 is an equidigital number, since it uses as much as digits as its factorization.

2565429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855146.

The product of its digits is 21600, while the sum is 33.

The square root of 2565429 is about 1601.6956639761. The cubic root of 2565429 is about 136.8947101576.

The spelling of 2565429 in words is "two million, five hundred sixty-five thousand, four hundred twenty-nine".