320025213240 has 64 divisors (see below), whose sum is σ = 974405151360. Its totient is φ = 84066322560.

The previous prime is 320025213181. The next prime is 320025213241. The reversal of 320025213240 is 42312520023.

It is a super-2 number, since 2×320025213240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 320025213240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320025213241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19894026 + ... + 19910105.

It is an arithmetic number, because the mean of its divisors is an integer number (15225080490).

Almost surely, 2^320025213240 is an apocalyptic number.

320025213240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320025213240 is an abundant number, since it is smaller than the sum of its proper divisors (654379938120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320025213240 is a wasteful number, since it uses less digits than its factorization.

320025213240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39804212 (or 39804208 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 320025213240 its reverse (42312520023), we get a palindrome (362337733263).

The spelling of 320025213240 in words is "three hundred twenty billion, twenty-five million, two hundred thirteen thousand, two hundred forty".