316320142244225 has 18 divisors (see below), whose sum is σ = 456275666406294. Its totient is φ = 216905240395200.

The previous prime is 316320142244221. The next prime is 316320142244243. The reversal of 316320142244225 is 522442241023613.

It can be written as a sum of positive squares in 3 ways, for example, as 2865439803121 + 313454702441104 = 1692761^2 + 17704652^2 .

It is not a de Polignac number, because 316320142244225 - 2² = 316320142244221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (316320142244221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 129110260916 + ... + 129110263365.

It is an arithmetic number, because the mean of its divisors is an integer number (25348648133683).

Almost surely, 2^{316320142244225} is an apocalyptic number.

316320142244225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

316320142244225 is a deficient number, since it is larger than the sum of its proper divisors (139955524162069).

316320142244225 is a wasteful number, since it uses less digits than its factorization.

316320142244225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258220524305 (or 258220524293 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 41.

Adding to 316320142244225 its reverse (522442241023613), we get a palindrome (838762383267838).

The spelling of 316320142244225 in words is "three hundred sixteen trillion, three hundred twenty billion, one hundred forty-two million, two hundred forty-four thousand, two hundred twenty-five".