673281925 has 6 divisors (see below), whose sum is σ = 834869618. Its totient is φ = 538625520.

The previous prime is 673281913. The next prime is 673281943. The reversal of 673281925 is 529182376.

It can be written as a sum of positive squares in 3 ways, for example, as 101163364 + 572118561 = 10058^2 + 23919^2 .

It is a de Polignac number, because none of the positive numbers 2^k-673281925 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13465614 + ... + 13465663.

Almost surely, 2^673281925 is an apocalyptic number.

It is an amenable number.

673281925 is a deficient number, since it is larger than the sum of its proper divisors (161587693).

673281925 is a wasteful number, since it uses less digits than its factorization.

673281925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26931287 (or 26931282 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 673281925 is about 25947.6766782693. The cubic root of 673281925 is about 876.4604399726.

The spelling of 673281925 in words is "six hundred seventy-three million, two hundred eighty-one thousand, nine hundred twenty-five".