280105005253 has 4 divisors (see below), whose sum is σ = 280561947148. Its totient is φ = 279648063360.

The previous prime is 280105005251. The next prime is 280105005259. The reversal of 280105005253 is 352500501082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16564462209 + 263540543044 = 128703^2 + 513362^2 .

It is a cyclic number.

It is not a de Polignac number, because 280105005253 - 2¹ = 280105005251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280105005251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228470028 + ... + 228471253.

It is an arithmetic number, because the mean of its divisors is an integer number (70140486787).

Almost surely, 2^280105005253 is an apocalyptic number.

It is an amenable number.

280105005253 is a deficient number, since it is larger than the sum of its proper divisors (456941895).

280105005253 is an equidigital number, since it uses as much as digits as its factorization.

280105005253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456941894.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 280105005253 in words is "two hundred eighty billion, one hundred five million, five thousand, two hundred fifty-three".