325205381 has 2 divisors, whose sum is σ = 325205382. Its totient is φ = 325205380.

The previous prime is 325205341. The next prime is 325205383. The reversal of 325205381 is 183502523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317730625 + 7474756 = 17825^2 + 2734^2 .

It is a cyclic number.

It is not a de Polignac number, because 325205381 - 2¹⁰ = 325204357 is a prime.

It is a super-2 number, since 2×325205381² = 211517079662710322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 325205383, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325205383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162602690 + 162602691.

It is an arithmetic number, because the mean of its divisors is an integer number (162602691).

Almost surely, 2^325205381 is an apocalyptic number.

It is an amenable number.

325205381 is a deficient number, since it is larger than the sum of its proper divisors (1).

325205381 is an equidigital number, since it uses as much as digits as its factorization.

325205381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 325205381 is about 18033.4517217309. The cubic root of 325205381 is about 687.6792302296.

The spelling of 325205381 in words is "three hundred twenty-five million, two hundred five thousand, three hundred eighty-one".