2565442 has 12 divisors (see below), whose sum is σ = 4230198. Its totient is φ = 1166000.

The previous prime is 2565403. The next prime is 2565449. The reversal of 2565442 is 2445652.

It can be written as a sum of positive squares in only one way, i.e., 1771561 + 793881 = 1331^2 + 891^2 .

It is a d-powerful number, because it can be written as 2¹¹ + 5⁷ + 6⁵ + 5⁹ + 4² + 4³ + 2¹⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2565442.

It is not an unprimeable number, because it can be changed into a prime (2565449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5059 + ... + 5542.

2^2565442 is an apocalyptic number.

2565442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2565442 is a deficient number, since it is larger than the sum of its proper divisors (1664756).

2565442 is a wasteful number, since it uses less digits than its factorization.

2565442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10625 (or 10614 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 2565442 is about 1601.6997221702. The cubic root of 2565442 is about 136.8949413896.

The spelling of 2565442 in words is "two million, five hundred sixty-five thousand, four hundred forty-two".