280438125 has 40 divisors (see below), whose sum is σ = 509761824. Its totient is φ = 135960000.

The previous prime is 280438111. The next prime is 280438127. The reversal of 280438125 is 521834082.

It is not a de Polignac number, because 280438125 - 2⁶ = 280438061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280438127) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13827 + ... + 27423.

Almost surely, 2^280438125 is an apocalyptic number.

280438125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280438125 is a deficient number, since it is larger than the sum of its proper divisors (229323699).

280438125 is a wasteful number, since it uses less digits than its factorization.

280438125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13631 (or 13616 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 280438125 is about 16746.2869018777. The cubic root of 280438125 is about 654.5543070580.

The spelling of 280438125 in words is "two hundred eighty million, four hundred thirty-eight thousand, one hundred twenty-five".