30321252505 has 16 divisors (see below), whose sum is σ = 38435901120. Its totient is φ = 22899094848.

The previous prime is 30321252431. The next prime is 30321252527. The reversal of 30321252505 is 50525212303.

It is a cyclic number.

It is not a de Polignac number, because 30321252505 - 2¹³ = 30321244313 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537022 + ... + 590791.

It is an arithmetic number, because the mean of its divisors is an integer number (2402243820).

Almost surely, 2^30321252505 is an apocalyptic number.

It is an amenable number.

30321252505 is a deficient number, since it is larger than the sum of its proper divisors (8114648615).

30321252505 is a wasteful number, since it uses less digits than its factorization.

30321252505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128120.

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 30321252505 its reverse (50525212303), we get a palindrome (80846464808).

The spelling of 30321252505 in words is "thirty billion, three hundred twenty-one million, two hundred fifty-two thousand, five hundred five".