2504904209 has 2 divisors, whose sum is σ = 2504904210. Its totient is φ = 2504904208.

The previous prime is 2504904187. The next prime is 2504904223. The reversal of 2504904209 is 9024094052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1813056400 + 691847809 = 42580^2 + 26303^2 .

It is a cyclic number.

It is not a de Polignac number, because 2504904209 - 2¹⁶ = 2504838673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2504904289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252452104 + 1252452105.

It is an arithmetic number, because the mean of its divisors is an integer number (1252452105).

Almost surely, 2^2504904209 is an apocalyptic number.

It is an amenable number.

2504904209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2504904209 is an equidigital number, since it uses as much as digits as its factorization.

2504904209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2504904209 is about 50049.0180622957. The cubic root of 2504904209 is about 1358.0957000367.

The spelling of 2504904209 in words is "two billion, five hundred four million, nine hundred four thousand, two hundred nine".