25041433321 has 2 divisors, whose sum is σ = 25041433322. Its totient is φ = 25041433320.

The previous prime is 25041433303. The next prime is 25041433327. The reversal of 25041433321 is 12333414052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19275157225 + 5766276096 = 138835^2 + 75936^2 .

It is a cyclic number.

It is not a de Polignac number, because 25041433321 - 2⁹ = 25041432809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25041433321.

It is not a weakly prime, because it can be changed into another prime (25041433327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12520716660 + 12520716661.

It is an arithmetic number, because the mean of its divisors is an integer number (12520716661).

Almost surely, 2^25041433321 is an apocalyptic number.

It is an amenable number.

25041433321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25041433321 is an equidigital number, since it uses as much as digits as its factorization.

25041433321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 25041433321 its reverse (12333414052), we get a palindrome (37374847373).

The spelling of 25041433321 in words is "twenty-five billion, forty-one million, four hundred thirty-three thousand, three hundred twenty-one".