305678725 has 12 divisors (see below), whose sum is σ = 413500320. Its totient is φ = 222311600.

The previous prime is 305678687. The next prime is 305678731. The reversal of 305678725 is 527876503.

It is not a de Polignac number, because 305678725 - 2¹⁷ = 305547653 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555505 + ... + 556054.

It is an arithmetic number, because the mean of its divisors is an integer number (34458360).

Almost surely, 2^305678725 is an apocalyptic number.

It is an amenable number.

305678725 is a deficient number, since it is larger than the sum of its proper divisors (107821595).

305678725 is a wasteful number, since it uses less digits than its factorization.

305678725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111580 (or 1111575 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 305678725 is about 17483.6702382538. The cubic root of 305678725 is about 673.6304926045.

The spelling of 305678725 in words is "three hundred five million, six hundred seventy-eight thousand, seven hundred twenty-five".