25255876403987 has 2 divisors, whose sum is σ = 25255876403988. Its totient is φ = 25255876403986.

The previous prime is 25255876403959. The next prime is 25255876404029. The reversal of 25255876403987 is 78930467855252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25255876403987 - 2¹⁰ = 25255876402963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25255876403987.

It is not a weakly prime, because it can be changed into another prime (25255876403287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12627938201993 + 12627938201994.

It is an arithmetic number, because the mean of its divisors is an integer number (12627938201994).

Almost surely, 2^{25255876403987} is an apocalyptic number.

25255876403987 is a deficient number, since it is larger than the sum of its proper divisors (1).

25255876403987 is an equidigital number, since it uses as much as digits as its factorization.

25255876403987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064000, while the sum is 71.

The spelling of 25255876403987 in words is "twenty-five trillion, two hundred fifty-five billion, eight hundred seventy-six million, four hundred three thousand, nine hundred eighty-seven".