25378832895677 has 2 divisors, whose sum is σ = 25378832895678. Its totient is φ = 25378832895676.

The previous prime is 25378832895629. The next prime is 25378832895733. The reversal of 25378832895677 is 77659823887352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13012223704516 + 12366609191161 = 3607246^2 + 3516619^2 .

It is a cyclic number.

It is not a de Polignac number, because 25378832895677 - 2³² = 25374537928381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25378832885677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12689416447838 + 12689416447839.

It is an arithmetic number, because the mean of its divisors is an integer number (12689416447839).

Almost surely, 2^{25378832895677} is an apocalyptic number.

It is an amenable number.

25378832895677 is a deficient number, since it is larger than the sum of its proper divisors (1).

25378832895677 is an equidigital number, since it uses as much as digits as its factorization.

25378832895677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8534937600, while the sum is 80.

The spelling of 25378832895677 in words is "twenty-five trillion, three hundred seventy-eight billion, eight hundred thirty-two million, eight hundred ninety-five thousand, six hundred seventy-seven".