280125 has 32 divisors (see below), whose sum is σ = 524160. Its totient is φ = 147600.

The previous prime is 280121. The next prime is 280129. The reversal of 280125 is 521082.

It is an interprime number because it is at equal distance from previous prime (280121) and next prime (280129).

It is not a de Polignac number, because 280125 - 2² = 280121 is a prime.

It is a plaindrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 280098 and 280107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3334 + ... + 3416.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2²⁸⁰¹²⁵ is an apocalyptic number.

280125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280125 is a deficient number, since it is larger than the sum of its proper divisors (244035).

280125 is an equidigital number, since it uses as much as digits as its factorization.

280125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 280125 is about 529.2683629313. The cubic root of 280125 is about 65.4310600718.

The spelling of 280125 in words is "two hundred eighty thousand, one hundred twenty-five".