305648125 has 20 divisors (see below), whose sum is σ = 388247596. Its totient is φ = 240480000.

The previous prime is 305648111. The next prime is 305648131. The reversal of 305648125 is 521846503.

It can be written as a sum of positive squares in 10 ways, for example, as 288558169 + 17089956 = 16987^2 + 4134^2 .

It is not a de Polignac number, because 305648125 - 2⁵ = 305648093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34117 + ... + 42133.

Almost surely, 2^305648125 is an apocalyptic number.

It is an amenable number.

305648125 is a deficient number, since it is larger than the sum of its proper divisors (82599471).

305648125 is an frugal number, since it uses more digits than its factorization.

305648125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098 (or 8083 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 305648125 is about 17482.7951140543. The cubic root of 305648125 is about 673.6080139047.

The spelling of 305648125 in words is "three hundred five million, six hundred forty-eight thousand, one hundred twenty-five".