25322161 has 2 divisors, whose sum is σ = 25322162. Its totient is φ = 25322160.

The previous prime is 25322147. The next prime is 25322177. The reversal of 25322161 is 16122352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 571536 = 4975^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 25322161 - 2¹⁹ = 24797873 is a prime.

It is not a weakly prime, because it can be changed into another prime (25322261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12661080 + 12661081.

It is an arithmetic number, because the mean of its divisors is an integer number (12661081).

Almost surely, 2^25322161 is an apocalyptic number.

It is an amenable number.

25322161 is a deficient number, since it is larger than the sum of its proper divisors (1).

25322161 is an equidigital number, since it uses as much as digits as its factorization.

25322161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 25322161 is about 5032.1129756793. The cubic root of 25322161 is about 293.6524229400.

The spelling of 25322161 in words is "twenty-five million, three hundred twenty-two thousand, one hundred sixty-one".