2505685 has 16 divisors (see below), whose sum is σ = 3701376. Its totient is φ = 1585728.

The previous prime is 2505683. The next prime is 2505691. The reversal of 2505685 is 5865052.

It is a cyclic number.

It is not a de Polignac number, because 2505685 - 2¹ = 2505683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2299 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (231336).

2^2505685 is an apocalyptic number.

It is an amenable number.

2505685 is a deficient number, since it is larger than the sum of its proper divisors (1195691).

2505685 is a wasteful number, since it uses less digits than its factorization.

2505685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2505685 is about 1582.9355640708. The cubic root of 2505685 is about 135.8236793754.

The spelling of 2505685 in words is "two million, five hundred five thousand, six hundred eighty-five".