325857281 has 2 divisors, whose sum is σ = 325857282. Its totient is φ = 325857280.

The previous prime is 325857223. The next prime is 325857341. The reversal of 325857281 is 182758523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215943025 + 109914256 = 14695^2 + 10484^2 .

It is an emirp because it is prime and its reverse (182758523) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325857281 is a prime.

It is a super-2 number, since 2×325857281² = 212365935161425922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (325857221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162928640 + 162928641.

It is an arithmetic number, because the mean of its divisors is an integer number (162928641).

Almost surely, 2^325857281 is an apocalyptic number.

It is an amenable number.

325857281 is a deficient number, since it is larger than the sum of its proper divisors (1).

325857281 is an equidigital number, since it uses as much as digits as its factorization.

325857281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 325857281 is about 18051.5174154418. The cubic root of 325857281 is about 688.1384260689.

The spelling of 325857281 in words is "three hundred twenty-five million, eight hundred fifty-seven thousand, two hundred eighty-one".