325971133921 has 2 divisors, whose sum is σ = 325971133922. Its totient is φ = 325971133920.

The previous prime is 325971133913. The next prime is 325971133933. The reversal of 325971133921 is 129331179523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289551610000 + 36419523921 = 538100^2 + 190839^2 .

It is a cyclic number.

It is not a de Polignac number, because 325971133921 - 2³ = 325971133913 is a prime.

It is not a weakly prime, because it can be changed into another prime (325971133121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162985566960 + 162985566961.

It is an arithmetic number, because the mean of its divisors is an integer number (162985566961).

Almost surely, 2^325971133921 is an apocalyptic number.

It is an amenable number.

325971133921 is a deficient number, since it is larger than the sum of its proper divisors (1).

325971133921 is an equidigital number, since it uses as much as digits as its factorization.

325971133921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The spelling of 325971133921 in words is "three hundred twenty-five billion, nine hundred seventy-one million, one hundred thirty-three thousand, nine hundred twenty-one".