245305 has 8 divisors (see below), whose sum is σ = 298944. Its totient is φ = 193200.

The previous prime is 245299. The next prime is 245317. The reversal of 245305 is 503542.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245305 - 2⁷ = 245177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10 + ... + 700.

It is an arithmetic number, because the mean of its divisors is an integer number (37368).

2²⁴⁵³⁰⁵ is an apocalyptic number.

It is an amenable number.

245305 is a deficient number, since it is larger than the sum of its proper divisors (53639).

245305 is an equidigital number, since it uses as much as digits as its factorization.

245305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 245305 is about 495.2827475291. The cubic root of 245305 is about 62.5992024586.

Adding to 245305 its reverse (503542), we get a palindrome (748847).

It can be divided in two parts, 24 and 5305, that added together give a square (5329 = 73²).

The spelling of 245305 in words is "two hundred forty-five thousand, three hundred five".