280979425 has 12 divisors (see below), whose sum is σ = 348834816. Its totient is φ = 224512400.

The previous prime is 280979401. The next prime is 280979449. The reversal of 280979425 is 524979082.

It is an interprime number because it is at equal distance from previous prime (280979401) and next prime (280979449).

It is not a de Polignac number, because 280979425 - 2⁷ = 280979297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15840 + ... + 28510.

It is an arithmetic number, because the mean of its divisors is an integer number (29069568).

Almost surely, 2^280979425 is an apocalyptic number.

280979425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280979425 is a deficient number, since it is larger than the sum of its proper divisors (67855391).

280979425 is a wasteful number, since it uses less digits than its factorization.

280979425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13568 (or 13563 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 280979425 is about 16762.4409022075. The cubic root of 280979425 is about 654.9751753309.

The spelling of 280979425 in words is "two hundred eighty million, nine hundred seventy-nine thousand, four hundred twenty-five".