25433321 has 2 divisors, whose sum is σ = 25433322. Its totient is φ = 25433320.

The previous prime is 25433311. The next prime is 25433327. The reversal of 25433321 is 12333452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21576025 + 3857296 = 4645^2 + 1964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25433321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25433327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12716660 + 12716661.

It is an arithmetic number, because the mean of its divisors is an integer number (12716661).

Almost surely, 2^25433321 is an apocalyptic number.

It is an amenable number.

25433321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25433321 is an equidigital number, since it uses as much as digits as its factorization.

25433321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 23.

The square root of 25433321 is about 5043.1459427623. The cubic root of 25433321 is about 294.0814905146.

Adding to 25433321 its reverse (12333452), we get a palindrome (37766773).

The spelling of 25433321 in words is "twenty-five million, four hundred thirty-three thousand, three hundred twenty-one".