245242305 has 72 divisors (see below), whose sum is σ = 539495424. Its totient is φ = 101908800.

The previous prime is 245242301. The next prime is 245242313. The reversal of 245242305 is 503242542.

It is a happy number.

245242305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245242305 - 2² = 245242301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245242301) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19200 + ... + 29310.

It is an arithmetic number, because the mean of its divisors is an integer number (7492992).

Almost surely, 2^245242305 is an apocalyptic number.

It is an amenable number.

245242305 is an abundant number, since it is smaller than the sum of its proper divisors (294253119).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245242305 is a wasteful number, since it uses less digits than its factorization.

245242305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10137 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 245242305 is about 15660.2140789965. The cubic root of 245242305 is about 625.9386897394.

Adding to 245242305 its reverse (503242542), we get a palindrome (748484847).

The spelling of 245242305 in words is "two hundred forty-five million, two hundred forty-two thousand, three hundred five".