320211025505 has 32 divisors (see below), whose sum is σ = 449713845504. Its totient is φ = 214297687296.

The previous prime is 320211025487. The next prime is 320211025531. The reversal of 320211025505 is 505520112023.

It is not a de Polignac number, because 320211025505 - 2¹² = 320211021409 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 1838579 + ... + 2005191.

It is an arithmetic number, because the mean of its divisors is an integer number (14053557672).

Almost surely, 2^320211025505 is an apocalyptic number.

320211025505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320211025505 is a deficient number, since it is larger than the sum of its proper divisors (129502819999).

320211025505 is a wasteful number, since it uses less digits than its factorization.

320211025505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167945.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 320211025505 its reverse (505520112023), we get a palindrome (825731137528).

The spelling of 320211025505 in words is "three hundred twenty billion, two hundred eleven million, twenty-five thousand, five hundred five".