25343426773321 has 2 divisors, whose sum is σ = 25343426773322. Its totient is φ = 25343426773320.

The previous prime is 25343426773309. The next prime is 25343426773339. The reversal of 25343426773321 is 12337762434352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19513519942921 + 5829906830400 = 4417411^2 + 2414520^2 .

It is a cyclic number.

It is not a de Polignac number, because 25343426773321 - 2⁵ = 25343426773289 is a prime.

It is a super-2 number, since 2×25343426773321² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25343426771321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671713386660 + 12671713386661.

It is an arithmetic number, because the mean of its divisors is an integer number (12671713386661).

Almost surely, 2^{25343426773321} is an apocalyptic number.

It is an amenable number.

25343426773321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25343426773321 is an equidigital number, since it uses as much as digits as its factorization.

25343426773321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 52.

The spelling of 25343426773321 in words is "twenty-five trillion, three hundred forty-three billion, four hundred twenty-six million, seven hundred seventy-three thousand, three hundred twenty-one".