2508905 has 16 divisors (see below), whose sum is σ = 3480960. Its totient is φ = 1700352.

The previous prime is 2508901. The next prime is 2508917. The reversal of 2508905 is 5098052.

It is a cyclic number.

It is not a de Polignac number, because 2508905 - 2² = 2508901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2508901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3026 + ... + 3764.

It is an arithmetic number, because the mean of its divisors is an integer number (217560).

2^2508905 is an apocalyptic number.

It is an amenable number.

2508905 is a deficient number, since it is larger than the sum of its proper divisors (972055).

2508905 is an equidigital number, since it uses as much as digits as its factorization.

2508905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 2508905 is about 1583.9523351414. The cubic root of 2508905 is about 135.8818357994.

The spelling of 2508905 in words is "two million, five hundred eight thousand, nine hundred five".