2560421505 has 16 divisors (see below), whose sum is σ = 4196594304. Its totient is φ = 1332251520.

The previous prime is 2560421453. The next prime is 2560421519. The reversal of 2560421505 is 5051240652.

It is not a de Polignac number, because 2560421505 - 2¹¹ = 2560419457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2081029 + ... + 2082258.

It is an arithmetic number, because the mean of its divisors is an integer number (262287144).

Almost surely, 2^2560421505 is an apocalyptic number.

It is an amenable number.

2560421505 is a deficient number, since it is larger than the sum of its proper divisors (1636172799).

2560421505 is a wasteful number, since it uses less digits than its factorization.

2560421505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4163336.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2560421505 is about 50600.6077532672. The cubic root of 2560421505 is about 1368.0558327431.

The spelling of 2560421505 in words is "two billion, five hundred sixty million, four hundred twenty-one thousand, five hundred five".