280425452789 has 4 divisors (see below), whose sum is σ = 280426558956. Its totient is φ = 280424346624.

The previous prime is 280425452689. The next prime is 280425452803. The reversal of 280425452789 is 987254524082.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12872717764 + 267552735025 = 113458^2 + 517255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280425452789 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 (280425452689) 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, 37127 + ... + 749819.

It is an arithmetic number, because the mean of its divisors is an integer number (70106639739).

Almost surely, 2^280425452789 is an apocalyptic number.

It is an amenable number.

280425452789 is a deficient number, since it is larger than the sum of its proper divisors (1106167).

280425452789 is an equidigital number, since it uses as much as digits as its factorization.

280425452789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106166.

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 280425452789 in words is "two hundred eighty billion, four hundred twenty-five million, four hundred fifty-two thousand, seven hundred eighty-nine".