245641305 has 32 divisors (see below), whose sum is σ = 483727104. Its totient is φ = 103654656.

The previous prime is 245641289. The next prime is 245641309. The reversal of 245641305 is 503146542.

It is not a de Polignac number, because 245641305 - 2⁴ = 245641289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245641309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88614 + ... + 91343.

It is an arithmetic number, because the mean of its divisors is an integer number (15116472).

Almost surely, 2^245641305 is an apocalyptic number.

It is an amenable number.

245641305 is a deficient number, since it is larger than the sum of its proper divisors (238085799).

245641305 is a wasteful number, since it uses less digits than its factorization.

245641305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179985.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 245641305 is about 15672.9481910711. The cubic root of 245641305 is about 626.2779653728.

Adding to 245641305 its reverse (503146542), we get a palindrome (748787847).

The spelling of 245641305 in words is "two hundred forty-five million, six hundred forty-one thousand, three hundred five".