280255005505 has 16 divisors (see below), whose sum is σ = 337387480704. Its totient is φ = 223484031360.

The previous prime is 280255005487. The next prime is 280255005509. The reversal of 280255005505 is 505500552082.

It is not a de Polignac number, because 280255005505 - 2¹⁹ = 280254481217 is a prime.

It is a super-2 number, since 2×280255005505² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280255005509) 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, 2183770 + ... + 2308540.

It is an arithmetic number, because the mean of its divisors is an integer number (21086717544).

Almost surely, 2^280255005505 is an apocalyptic number.

It is an amenable number.

280255005505 is a deficient number, since it is larger than the sum of its proper divisors (57132475199).

280255005505 is a wasteful number, since it uses less digits than its factorization.

280255005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126216.

The product of its (nonzero) digits is 100000, while the sum is 37.

Adding to 280255005505 its reverse (505500552082), we get a palindrome (785755557587).

The spelling of 280255005505 in words is "two hundred eighty billion, two hundred fifty-five million, five thousand, five hundred five".