305725223 has 8 divisors (see below), whose sum is σ = 319389696. Its totient is φ = 292091800.

The previous prime is 305725201. The next prime is 305725237. The reversal of 305725223 is 322527503.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 305725223 - 2⁶ = 305725159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305725243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13658 + ... + 28248.

It is an arithmetic number, because the mean of its divisors is an integer number (39923712).

Almost surely, 2^305725223 is an apocalyptic number.

305725223 is a deficient number, since it is larger than the sum of its proper divisors (13664473).

305725223 is a wasteful number, since it uses less digits than its factorization.

305725223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15525.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 305725223 is about 17484.9999428081. Note that the first 4 decimals coincide. The cubic root of 305725223 is about 673.6646470724.

The spelling of 305725223 in words is "three hundred five million, seven hundred twenty-five thousand, two hundred twenty-three".