25887388567 has 2 divisors, whose sum is σ = 25887388568. Its totient is φ = 25887388566.

The previous prime is 25887388531. The next prime is 25887388573. The reversal of 25887388567 is 76588378852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25887388567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25887388067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12943694283 + 12943694284.

It is an arithmetic number, because the mean of its divisors is an integer number (12943694284).

Almost surely, 2^25887388567 is an apocalyptic number.

25887388567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25887388567 is an equidigital number, since it uses as much as digits as its factorization.

25887388567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180633600, while the sum is 67.

The spelling of 25887388567 in words is "twenty-five billion, eight hundred eighty-seven million, three hundred eighty-eight thousand, five hundred sixty-seven".