320025143140 has 48 divisors (see below), whose sum is σ = 714354327792. Its totient is φ = 120011227136.

The previous prime is 320025143117. The next prime is 320025143149. The reversal of 320025143140 is 41341520023.

It can be written as a sum of positive squares in 8 ways, for example, as 21201107236 + 298824035904 = 145606^2 + 546648^2 .

It is not an unprimeable number, because it can be changed into a prime (320025143149) 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, 1743847 + ... + 1918606.

It is an arithmetic number, because the mean of its divisors is an integer number (14882381829).

Almost surely, 2^320025143140 is an apocalyptic number.

It is an amenable number.

320025143140 is an abundant number, since it is smaller than the sum of its proper divisors (394329184652).

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

320025143140 is a wasteful number, since it uses less digits than its factorization.

320025143140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662736 (or 3662734 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 320025143140 its reverse (41341520023), we get a palindrome (361366663163).

The spelling of 320025143140 in words is "three hundred twenty billion, twenty-five million, one hundred forty-three thousand, one hundred forty".