25145041205321 has 2 divisors, whose sum is σ = 25145041205322. Its totient is φ = 25145041205320.

The previous prime is 25145041205131. The next prime is 25145041205483. The reversal of 25145041205321 is 12350214054152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12770159543296 + 12374881662025 = 3573536^2 + 3517795^2 .

It is a cyclic number.

It is not a de Polignac number, because 25145041205321 - 2³⁰ = 25143967463497 is a prime.

It is not a weakly prime, because it can be changed into another prime (25145041505321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12572520602660 + 12572520602661.

It is an arithmetic number, because the mean of its divisors is an integer number (12572520602661).

Almost surely, 2^{25145041205321} is an apocalyptic number.

It is an amenable number.

25145041205321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25145041205321 is an equidigital number, since it uses as much as digits as its factorization.

25145041205321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 25145041205321 its reverse (12350214054152), we get a palindrome (37495255259473).

The spelling of 25145041205321 in words is "twenty-five trillion, one hundred forty-five billion, forty-one million, two hundred five thousand, three hundred twenty-one".