2505065 has 4 divisors (see below), whose sum is σ = 3006084. Its totient is φ = 2004048.

The previous prime is 2505043. The next prime is 2505067. The reversal of 2505065 is 5605052.

2505065 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.

It can be written as a sum of positive squares in 2 ways, for example, as 258064 + 2247001 = 508^2 + 1499^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505065 - 2¹² = 2500969 is a prime.

It is an Ulam number.

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 2505065.

It is not an unprimeable number, because it can be changed into a prime (2505067) 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, 250502 + ... + 250511.

It is an arithmetic number, because the mean of its divisors is an integer number (751521).

2^2505065 is an apocalyptic number.

It is an amenable number.

2505065 is a deficient number, since it is larger than the sum of its proper divisors (501019).

2505065 is an equidigital number, since it uses as much as digits as its factorization.

2505065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501018.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 2505065 is about 1582.7397132820. The cubic root of 2505065 is about 135.8124758353.

The spelling of 2505065 in words is "two million, five hundred five thousand, sixty-five".