325544221091 has 2 divisors, whose sum is σ = 325544221092. Its totient is φ = 325544221090.

The previous prime is 325544221039. The next prime is 325544221109. The reversal of 325544221091 is 190122445523.

Together with next prime (325544221109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 325544221091 - 2⁶ = 325544221027 is a prime.

It is not a weakly prime, because it can be changed into another prime (325544221591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162772110545 + 162772110546.

It is an arithmetic number, because the mean of its divisors is an integer number (162772110546).

Almost surely, 2^325544221091 is an apocalyptic number.

325544221091 is a deficient number, since it is larger than the sum of its proper divisors (1).

325544221091 is an equidigital number, since it uses as much as digits as its factorization.

325544221091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 325544221091 in words is "three hundred twenty-five billion, five hundred forty-four million, two hundred twenty-one thousand, ninety-one".