25641233 has 2 divisors, whose sum is σ = 25641234. Its totient is φ = 25641232.

The previous prime is 25641227. The next prime is 25641293. The reversal of 25641233 is 33214652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18421264 + 7219969 = 4292^2 + 2687^2 .

It is a cyclic number.

It is not a de Polignac number, because 25641233 - 2⁸ = 25640977 is a prime.

It is equal to p_1603475 and since 25641233 and 1603475 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25641293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12820616 + 12820617.

It is an arithmetic number, because the mean of its divisors is an integer number (12820617).

Almost surely, 2^25641233 is an apocalyptic number.

It is an amenable number.

25641233 is a deficient number, since it is larger than the sum of its proper divisors (1).

25641233 is an equidigital number, since it uses as much as digits as its factorization.

25641233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 25641233 is about 5063.7173104351. The cubic root of 25641233 is about 294.8806680042.

Adding to 25641233 its reverse (33214652), we get a palindrome (58855885).

The spelling of 25641233 in words is "twenty-five million, six hundred forty-one thousand, two hundred thirty-three".