64000025353321 has 2 divisors, whose sum is σ = 64000025353322. Its totient is φ = 64000025353320.

The previous prime is 64000025353181. The next prime is 64000025353339. The reversal of 64000025353321 is 12335352000046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43508007523600 + 20492017829721 = 6596060^2 + 4526811^2 .

It is a cyclic number.

It is not a de Polignac number, because 64000025353321 - 2¹³ = 64000025345129 is a prime.

It is not a weakly prime, because it can be changed into another prime (64000025353721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32000012676660 + 32000012676661.

It is an arithmetic number, because the mean of its divisors is an integer number (32000012676661).

Almost surely, 2^{64000025353321} is an apocalyptic number.

It is an amenable number.

64000025353321 is a deficient number, since it is larger than the sum of its proper divisors (1).

64000025353321 is an equidigital number, since it uses as much as digits as its factorization.

64000025353321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 64000025353321 its reverse (12335352000046), we get a palindrome (76335377353367).

The spelling of 64000025353321 in words is "sixty-four trillion, twenty-five million, three hundred fifty-three thousand, three hundred twenty-one".