12955657925381 has 2 divisors, whose sum is σ = 12955657925382. Its totient is φ = 12955657925380.

The previous prime is 12955657925333. The next prime is 12955657925477. The reversal of 12955657925381 is 18352975655921.

12955657925381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12815326022500 + 140331902881 = 3579850^2 + 374609^2 .

It is a cyclic number.

It is not a de Polignac number, because 12955657925381 - 2³⁸ = 12680780018437 is a prime.

It is a super-2 number, since 2×12955657925381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12955657925281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6477828962690 + 6477828962691.

It is an arithmetic number, because the mean of its divisors is an integer number (6477828962691).

Almost surely, 2^{12955657925381} is an apocalyptic number.

It is an amenable number.

12955657925381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12955657925381 is an equidigital number, since it uses as much as digits as its factorization.

12955657925381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120000, while the sum is 68.

The spelling of 12955657925381 in words is "twelve trillion, nine hundred fifty-five billion, six hundred fifty-seven million, nine hundred twenty-five thousand, three hundred eighty-one".