25627321 has 2 divisors, whose sum is σ = 25627322. Its totient is φ = 25627320.

The previous prime is 25627289. The next prime is 25627339. The reversal of 25627321 is 12372652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19053225 + 6574096 = 4365^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 25627321 - 2⁵ = 25627289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25627321.

It is not a weakly prime, because it can be changed into another prime (25627391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12813660 + 12813661.

It is an arithmetic number, because the mean of its divisors is an integer number (12813661).

Almost surely, 2^25627321 is an apocalyptic number.

It is an amenable number.

25627321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25627321 is an equidigital number, since it uses as much as digits as its factorization.

25627321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 25627321 is about 5062.3434296776. The cubic root of 25627321 is about 294.8273278494.

Adding to 25627321 its reverse (12372652), we get a palindrome (37999973).

The spelling of 25627321 in words is "twenty-five million, six hundred twenty-seven thousand, three hundred twenty-one".