325405021 has 2 divisors, whose sum is σ = 325405022. Its totient is φ = 325405020.

The previous prime is 325404979. The next prime is 325405033. The reversal of 325405021 is 120504523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214944921 + 110460100 = 14661^2 + 10510^2 .

It is a cyclic number.

It is not a de Polignac number, because 325405021 - 2¹³ = 325396829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 325404983 and 325405001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325405051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162702510 + 162702511.

It is an arithmetic number, because the mean of its divisors is an integer number (162702511).

Almost surely, 2^325405021 is an apocalyptic number.

It is an amenable number.

325405021 is a deficient number, since it is larger than the sum of its proper divisors (1).

325405021 is an equidigital number, since it uses as much as digits as its factorization.

325405021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 325405021 is about 18038.9861411333. The cubic root of 325405021 is about 687.8199210113.

Adding to 325405021 its reverse (120504523), we get a palindrome (445909544).

The spelling of 325405021 in words is "three hundred twenty-five million, four hundred five thousand, twenty-one".