325450781 has 2 divisors, whose sum is σ = 325450782. Its totient is φ = 325450780.

The previous prime is 325450777. The next prime is 325450817. The reversal of 325450781 is 187054523.

It is a happy number.

Together with next prime (325450817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325225156 + 225625 = 18034^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 325450781 - 2² = 325450777 is a prime.

It is a super-3 number, since 3×325450781³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325450751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162725390 + 162725391.

It is an arithmetic number, because the mean of its divisors is an integer number (162725391).

Almost surely, 2^325450781 is an apocalyptic number.

It is an amenable number.

325450781 is a deficient number, since it is larger than the sum of its proper divisors (1).

325450781 is an equidigital number, since it uses as much as digits as its factorization.

325450781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 325450781 is about 18040.2544605114. The cubic root of 325450781 is about 687.8521610018.

The spelling of 325450781 in words is "three hundred twenty-five million, four hundred fifty thousand, seven hundred eighty-one".