25152065321 has 2 divisors, whose sum is σ = 25152065322. Its totient is φ = 25152065320.

The previous prime is 25152065299. The next prime is 25152065333. The reversal of 25152065321 is 12356025152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21607530025 + 3544535296 = 146995^2 + 59536^2 .

It is a cyclic number.

It is not a de Polignac number, because 25152065321 - 2³⁴ = 7972196137 is a prime.

It is not a weakly prime, because it can be changed into another prime (25152055321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12576032660 + 12576032661.

It is an arithmetic number, because the mean of its divisors is an integer number (12576032661).

Almost surely, 2^25152065321 is an apocalyptic number.

It is an amenable number.

25152065321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25152065321 is an equidigital number, since it uses as much as digits as its factorization.

25152065321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 25152065321 in words is "twenty-five billion, one hundred fifty-two million, sixty-five thousand, three hundred twenty-one".