280530025505 has 16 divisors (see below), whose sum is σ = 345731284800. Its totient is φ = 218435841600.

The previous prime is 280530025487. The next prime is 280530025537. The reversal of 280530025505 is 505520035082.

It is not a de Polignac number, because 280530025505 - 2¹⁴ = 280530009121 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, 4677875 + ... + 4737464.

It is an arithmetic number, because the mean of its divisors is an integer number (21608205300).

Almost surely, 2^280530025505 is an apocalyptic number.

It is an amenable number.

280530025505 is a deficient number, since it is larger than the sum of its proper divisors (65201259295).

280530025505 is a wasteful number, since it uses less digits than its factorization.

280530025505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9415504.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 280530025505 in words is "two hundred eighty billion, five hundred thirty million, twenty-five thousand, five hundred five".