280325849 has 2 divisors, whose sum is σ = 280325850. Its totient is φ = 280325848.

The previous prime is 280325833. The next prime is 280325879. The reversal of 280325849 is 948523082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279959824 + 366025 = 16732^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 280325849 - 2⁴ = 280325833 is a prime.

It is not a weakly prime, because it can be changed into another prime (280325809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140162924 + 140162925.

It is an arithmetic number, because the mean of its divisors is an integer number (140162925).

Almost surely, 2^280325849 is an apocalyptic number.

It is an amenable number.

280325849 is a deficient number, since it is larger than the sum of its proper divisors (1).

280325849 is an equidigital number, since it uses as much as digits as its factorization.

280325849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 280325849 is about 16742.9343007730. The cubic root of 280325849 is about 654.4669431054.

The spelling of 280325849 in words is "two hundred eighty million, three hundred twenty-five thousand, eight hundred forty-nine".