325075661 has 2 divisors, whose sum is σ = 325075662. Its totient is φ = 325075660.

The previous prime is 325075633. The next prime is 325075679. The reversal of 325075661 is 166570523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219602761 + 105472900 = 14819^2 + 10270^2 .

It is a cyclic number.

It is not a de Polignac number, because 325075661 - 2²² = 320881357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325075601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162537830 + 162537831.

It is an arithmetic number, because the mean of its divisors is an integer number (162537831).

Almost surely, 2^325075661 is an apocalyptic number.

It is an amenable number.

325075661 is a deficient number, since it is larger than the sum of its proper divisors (1).

325075661 is an equidigital number, since it uses as much as digits as its factorization.

325075661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 325075661 is about 18029.8547137796. The cubic root of 325075661 is about 687.5877827745.

The spelling of 325075661 in words is "three hundred twenty-five million, seventy-five thousand, six hundred sixty-one".