245412305 has 16 divisors (see below), whose sum is σ = 303609360. Its totient is φ = 190294272.

The previous prime is 245412287. The next prime is 245412317. The reversal of 245412305 is 503214542.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18939904 + 226472401 = 4352^2 + 15049^2 .

It is a cyclic number.

It is not a de Polignac number, because 245412305 - 2⁸ = 245412049 is a prime.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 48851 + ... + 53639.

It is an arithmetic number, because the mean of its divisors is an integer number (18975585).

Almost surely, 2^245412305 is an apocalyptic number.

It is an amenable number.

245412305 is a deficient number, since it is larger than the sum of its proper divisors (58197055).

245412305 is a wasteful number, since it uses less digits than its factorization.

245412305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 245412305 is about 15665.6409061360. The cubic root of 245412305 is about 626.0832882271.

Adding to 245412305 its reverse (503214542), we get a palindrome (748626847).

The spelling of 245412305 in words is "two hundred forty-five million, four hundred twelve thousand, three hundred five".