280416325 has 12 divisors (see below), whose sum is σ = 397390240. Its totient is φ = 192285360.

The previous prime is 280416317. The next prime is 280416379. The reversal of 280416325 is 523614082.

It is not a de Polignac number, because 280416325 - 2³ = 280416317 is a prime.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801015 + ... + 801364.

Almost surely, 2^280416325 is an apocalyptic number.

280416325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280416325 is a deficient number, since it is larger than the sum of its proper divisors (116973915).

280416325 is a wasteful number, since it uses less digits than its factorization.

280416325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602396 (or 1602391 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 280416325 is about 16745.6359986714. The cubic root of 280416325 is about 654.5373459147.

The spelling of 280416325 in words is "two hundred eighty million, four hundred sixteen thousand, three hundred twenty-five".