280494125 has 16 divisors (see below), whose sum is σ = 350753520. Its totient is φ = 223948800.

The previous prime is 280494089. The next prime is 280494133. The reversal of 280494125 is 521494082.

It can be written as a sum of positive squares in 8 ways, for example, as 5299204 + 275194921 = 2302^2 + 16589^2 .

It is not a de Polignac number, because 280494125 - 2¹⁴ = 280477741 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70181 + ... + 74069.

It is an arithmetic number, because the mean of its divisors is an integer number (21922095).

Almost surely, 2^280494125 is an apocalyptic number.

280494125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280494125 is a deficient number, since it is larger than the sum of its proper divisors (70259395).

280494125 is an equidigital number, since it uses as much as digits as its factorization.

280494125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481 (or 4471 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 280494125 is about 16747.9588308546. The cubic root of 280494125 is about 654.5978729386.

The spelling of 280494125 in words is "two hundred eighty million, four hundred ninety-four thousand, one hundred twenty-five".