245222305 has 8 divisors (see below), whose sum is σ = 297301032. Its totient is φ = 194155008.

The previous prime is 245222293. The next prime is 245222309. The reversal of 245222305 is 503222542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 80656 + 245141649 = 284^2 + 15657^2 .

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 245222305 - 2⁹ = 245221793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245222305.

It is not an unprimeable number, because it can be changed into a prime (245222309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252322 + ... + 253291.

It is an arithmetic number, because the mean of its divisors is an integer number (37162629).

Almost surely, 2^245222305 is an apocalyptic number.

It is an amenable number.

245222305 is a deficient number, since it is larger than the sum of its proper divisors (52078727).

245222305 is an equidigital number, since it uses as much as digits as its factorization.

245222305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505715.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 245222305 is about 15659.5755051023. The cubic root of 245222305 is about 625.9216737599.

Adding to 245222305 its reverse (503222542), we get a palindrome (748444847).

The spelling of 245222305 in words is "two hundred forty-five million, two hundred twenty-two thousand, three hundred five".