280425071 has 4 divisors (see below), whose sum is σ = 280605144. Its totient is φ = 280245000.

The previous prime is 280425031. The next prime is 280425073. The reversal of 280425071 is 170524082.

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

It is a cyclic number.

It is not a de Polignac number, because 280425071 - 2⁶ = 280425007 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 (280425073) 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 3 ways as a sum of consecutive naturals, for example, 87680 + ... + 90821.

It is an arithmetic number, because the mean of its divisors is an integer number (70151286).

Almost surely, 2^280425071 is an apocalyptic number.

280425071 is a deficient number, since it is larger than the sum of its proper divisors (180073).

280425071 is a wasteful number, since it uses less digits than its factorization.

280425071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180072.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 280425071 is about 16745.8971392995. The cubic root of 280425071 is about 654.5441507065.

The spelling of 280425071 in words is "two hundred eighty million, four hundred twenty-five thousand, seventy-one".