306240225 has 12 divisors (see below), whose sum is σ = 506317296. Its totient is φ = 163328080.

The previous prime is 306240173. The next prime is 306240269. The reversal of 306240225 is 522042603.

It is not a de Polignac number, because 306240225 - 2⁶ = 306240161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 306240195 and 306240204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2041527 + ... + 2041676.

It is an arithmetic number, because the mean of its divisors is an integer number (42193108).

Almost surely, 2^306240225 is an apocalyptic number.

It is an amenable number.

306240225 is a deficient number, since it is larger than the sum of its proper divisors (200077071).

306240225 is a wasteful number, since it uses less digits than its factorization.

306240225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083216 (or 4083211 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 306240225 is about 17499.7207120571. The cubic root of 306240225 is about 674.0427033438.

Adding to 306240225 its reverse (522042603), we get a palindrome (828282828).

The spelling of 306240225 in words is "three hundred six million, two hundred forty thousand, two hundred twenty-five".