25345444587871 has 2 divisors, whose sum is σ = 25345444587872. Its totient is φ = 25345444587870.

The previous prime is 25345444587857. The next prime is 25345444587901. The reversal of 25345444587871 is 17878544454352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25345444587871 - 2¹⁷ = 25345444456799 is a prime.

It is a super-2 number, since 2×25345444587871² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25345444587797 and 25345444587806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25345444587821) 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, 12672722293935 + 12672722293936.

It is an arithmetic number, because the mean of its divisors is an integer number (12672722293936).

Almost surely, 2^{25345444587871} is an apocalyptic number.

25345444587871 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345444587871 is an equidigital number, since it uses as much as digits as its factorization.

25345444587871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 602112000, while the sum is 67.

The spelling of 25345444587871 in words is "twenty-five trillion, three hundred forty-five billion, four hundred forty-four million, five hundred eighty-seven thousand, eight hundred seventy-one".