25887244013567 has 2 divisors, whose sum is σ = 25887244013568. Its totient is φ = 25887244013566.

The previous prime is 25887244013539. The next prime is 25887244013597. The reversal of 25887244013567 is 76531044278852.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25887244013567 - 2¹⁸ = 25887243751423 is a prime.

It is a super-3 number, since 3×25887244013567³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25887244013597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12943622006783 + 12943622006784.

It is an arithmetic number, because the mean of its divisors is an integer number (12943622006784).

Almost surely, 2^{25887244013567} is an apocalyptic number.

25887244013567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25887244013567 is an equidigital number, since it uses as much as digits as its factorization.

25887244013567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90316800, while the sum is 62.

The spelling of 25887244013567 in words is "twenty-five trillion, eight hundred eighty-seven billion, two hundred forty-four million, thirteen thousand, five hundred sixty-seven".