280125497 has 2 divisors, whose sum is σ = 280125498. Its totient is φ = 280125496.

The previous prime is 280125463. The next prime is 280125583. The reversal of 280125497 is 794521082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218330176 + 61795321 = 14776^2 + 7861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280125497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280125497.

It is not a weakly prime, because it can be changed into another prime (280125457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140062748 + 140062749.

It is an arithmetic number, because the mean of its divisors is an integer number (140062749).

Almost surely, 2^280125497 is an apocalyptic number.

It is an amenable number.

280125497 is a deficient number, since it is larger than the sum of its proper divisors (1).

280125497 is an equidigital number, since it uses as much as digits as its factorization.

280125497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 280125497 is about 16736.9500507112. The cubic root of 280125497 is about 654.3109876790.

The spelling of 280125497 in words is "two hundred eighty million, one hundred twenty-five thousand, four hundred ninety-seven".