325220016481 has 2 divisors, whose sum is σ = 325220016482. Its totient is φ = 325220016480.

The previous prime is 325220016431. The next prime is 325220016509. The reversal of 325220016481 is 184610022523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173069312256 + 152150704225 = 416016^2 + 390065^2 .

It is a cyclic number.

It is not a de Polignac number, because 325220016481 - 2¹¹ = 325220014433 is a prime.

It is a super-2 number, since 2×325220016481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (325220016431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162610008240 + 162610008241.

It is an arithmetic number, because the mean of its divisors is an integer number (162610008241).

Almost surely, 2^325220016481 is an apocalyptic number.

It is an amenable number.

325220016481 is a deficient number, since it is larger than the sum of its proper divisors (1).

325220016481 is an equidigital number, since it uses as much as digits as its factorization.

325220016481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 325220016481 in words is "three hundred twenty-five billion, two hundred twenty million, sixteen thousand, four hundred eighty-one".