2509443259 has 16 divisors (see below), whose sum is σ = 2685249280. Its totient is φ = 2338126560.

The previous prime is 2509443257. The next prime is 2509443269. The reversal of 2509443259 is 9523449052.

It is a cyclic number.

It is not a de Polignac number, because 2509443259 - 2¹ = 2509443257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2509443257) 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, 1084714 + ... + 1087024.

It is an arithmetic number, because the mean of its divisors is an integer number (167828080).

Almost surely, 2^2509443259 is an apocalyptic number.

2509443259 is a deficient number, since it is larger than the sum of its proper divisors (175806021).

2509443259 is a wasteful number, since it uses less digits than its factorization.

2509443259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 2509443259 is about 50094.3435828837. The cubic root of 2509443259 is about 1358.9155244087.

The spelling of 2509443259 in words is "two billion, five hundred nine million, four hundred forty-three thousand, two hundred fifty-nine".