280425763 has 2 divisors, whose sum is σ = 280425764. Its totient is φ = 280425762.

The previous prime is 280425713. The next prime is 280425787. The reversal of 280425763 is 367524082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280425763 is a prime.

It is not a weakly prime, because it can be changed into another prime (280425713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140212881 + 140212882.

It is an arithmetic number, because the mean of its divisors is an integer number (140212882).

Almost surely, 2^280425763 is an apocalyptic number.

280425763 is a deficient number, since it is larger than the sum of its proper divisors (1).

280425763 is an equidigital number, since it uses as much as digits as its factorization.

280425763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 280425763 is about 16745.9178010642. The cubic root of 280425763 is about 654.5446891084.

The spelling of 280425763 in words is "two hundred eighty million, four hundred twenty-five thousand, seven hundred sixty-three".