252305302505 has 16 divisors (see below), whose sum is σ = 313579155600. Its totient is φ = 194884001536.

The previous prime is 252305302441. The next prime is 252305302507. The reversal of 252305302505 is 505203503252.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 98580928576 + 153724373929 = 313976^2 + 392077^2 .

It is not a de Polignac number, because 252305302505 - 2⁶ = 252305302441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (252305302507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912560 + ... + 1156449.

It is an arithmetic number, because the mean of its divisors is an integer number (19598697225).

Almost surely, 2^252305302505 is an apocalyptic number.

It is an amenable number.

252305302505 is a deficient number, since it is larger than the sum of its proper divisors (61273853095).

252305302505 is an frugal number, since it uses more digits than its factorization.

252305302505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069101 (or 2069043 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 32.

Adding to 252305302505 its reverse (505203503252), we get a palindrome (757508805757).

The spelling of 252305302505 in words is "two hundred fifty-two billion, three hundred five million, three hundred two thousand, five hundred five".