2560543403 has 16 divisors (see below), whose sum is σ = 2868746496. Its totient is φ = 2265308640.

The previous prime is 2560543399. The next prime is 2560543421. The reversal of 2560543403 is 3043450652.

It is a cyclic number.

It is not a de Polignac number, because 2560543403 - 2² = 2560543399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2560543403.

It is not an unprimeable number, because it can be changed into a prime (2560543463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121250 + ... + 140792.

It is an arithmetic number, because the mean of its divisors is an integer number (179296656).

Almost surely, 2^2560543403 is an apocalyptic number.

2560543403 is a deficient number, since it is larger than the sum of its proper divisors (308203093).

2560543403 is a wasteful number, since it uses less digits than its factorization.

2560543403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19874.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 2560543403 is about 50601.8122501556. The cubic root of 2560543403 is about 1368.0775427914.

The spelling of 2560543403 in words is "two billion, five hundred sixty million, five hundred forty-three thousand, four hundred three".