25361321 has 2 divisors, whose sum is σ = 25361322. Its totient is φ = 25361320.

The previous prime is 25361311. The next prime is 25361359. The reversal of 25361321 is 12316352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25361296 + 25 = 5036^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 25361321 - 2¹⁴ = 25344937 is a prime.

It is not a weakly prime, because it can be changed into another prime (25361311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12680660 + 12680661.

It is an arithmetic number, because the mean of its divisors is an integer number (12680661).

Almost surely, 2^25361321 is an apocalyptic number.

It is an amenable number.

25361321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25361321 is an equidigital number, since it uses as much as digits as its factorization.

25361321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 25361321 is about 5036.0024821281. The cubic root of 25361321 is about 293.8037200078.

Adding to 25361321 its reverse (12316352), we get a palindrome (37677673).

The spelling of 25361321 in words is "twenty-five million, three hundred sixty-one thousand, three hundred twenty-one".