25253321 has 2 divisors, whose sum is σ = 25253322. Its totient is φ = 25253320.

The previous prime is 25253311. The next prime is 25253369. The reversal of 25253321 is 12335252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16491721 + 8761600 = 4061^2 + 2960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25253321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25253311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12626660 + 12626661.

It is an arithmetic number, because the mean of its divisors is an integer number (12626661).

Almost surely, 2^25253321 is an apocalyptic number.

It is an amenable number.

25253321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25253321 is an equidigital number, since it uses as much as digits as its factorization.

25253321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 23.

The square root of 25253321 is about 5025.2682515464. The cubic root of 25253321 is about 293.3860768048.

Adding to 25253321 its reverse (12335252), we get a palindrome (37588573).

The spelling of 25253321 in words is "twenty-five million, two hundred fifty-three thousand, three hundred twenty-one".