2506822209 has 16 divisors (see below), whose sum is σ = 3909275200. Its totient is φ = 1583255808.

The previous prime is 2506822189. The next prime is 2506822231. The reversal of 2506822209 is 9022286052.

It is not a de Polignac number, because 2506822209 - 2⁸ = 2506821953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2506822259) 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, 2442784 + ... + 2443809.

It is an arithmetic number, because the mean of its divisors is an integer number (244329700).

Almost surely, 2^2506822209 is an apocalyptic number.

It is an amenable number.

2506822209 is a deficient number, since it is larger than the sum of its proper divisors (1402452991).

2506822209 is a wasteful number, since it uses less digits than its factorization.

2506822209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886621 (or 4886615 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2506822209 is about 50068.1756108608. The cubic root of 2506822209 is about 1358.4422419642.

The spelling of 2506822209 in words is "two billion, five hundred six million, eight hundred twenty-two thousand, two hundred nine".