280425425 has 24 divisors (see below), whose sum is σ = 398040000. Its totient is φ = 191983680.

The previous prime is 280425419. The next prime is 280425443. The reversal of 280425425 is 524524082.

It is not a de Polignac number, because 280425425 - 2⁸ = 280425169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280425391 and 280425400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186326 + ... + 187824.

It is an arithmetic number, because the mean of its divisors is an integer number (16585000).

Almost surely, 2^280425425 is an apocalyptic number.

280425425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280425425 is a deficient number, since it is larger than the sum of its proper divisors (117614575).

280425425 is a wasteful number, since it uses less digits than its factorization.

280425425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585 (or 2580 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 280425425 is about 16745.9077090494. The cubic root of 280425425 is about 654.5444261318.

The spelling of 280425425 in words is "two hundred eighty million, four hundred twenty-five thousand, four hundred twenty-five".