2505205 has 8 divisors (see below), whose sum is σ = 3183192. Its totient is φ = 1886208.

The previous prime is 2505193. The next prime is 2505227. The reversal of 2505205 is 5025052.

It can be written as a sum of positive squares in 4 ways, for example, as 264196 + 2241009 = 514^2 + 1497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2505205 - 2⁷ = 2505077 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14652 + ... + 14821.

It is an arithmetic number, because the mean of its divisors is an integer number (397899).

2^2505205 is an apocalyptic number.

It is an amenable number.

2505205 is a deficient number, since it is larger than the sum of its proper divisors (677987).

2505205 is a wasteful number, since it uses less digits than its factorization.

2505205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29495.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 2505205 is about 1582.7839397719. The cubic root of 2505205 is about 135.8150058285.

The spelling of 2505205 in words is "two million, five hundred five thousand, two hundred five".