245000005 has 16 divisors (see below), whose sum is σ = 313112304. Its totient is φ = 183393280.

The previous prime is 244999991. The next prime is 245000027. The reversal of 245000005 is 500000542.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 23049601 + 221950404 = 4801^2 + 14898^2 .

It is not a de Polignac number, because 245000005 - 2¹¹ = 244997957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6375 + ... + 23035.

It is an arithmetic number, because the mean of its divisors is an integer number (19569519).

Almost surely, 2^245000005 is an apocalyptic number.

It is an amenable number.

245000005 is a deficient number, since it is larger than the sum of its proper divisors (68112299).

245000005 is a wasteful number, since it uses less digits than its factorization.

245000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16856.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 245000005 is about 15652.4760022177. The cubic root of 245000005 is about 625.7324788243.

Adding to 245000005 its reverse (500000542), we get a palindrome (745000547).

The spelling of 245000005 in words is "two hundred forty-five million, five", and thus it is an aban number.