26425443587 has 4 divisors (see below), whose sum is σ = 26505279096. Its totient is φ = 26345608080.

The previous prime is 26425443571. The next prime is 26425443619. The reversal of 26425443587 is 78534452462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78534452462 = 2 ⋅39267226231.

It is a cyclic number.

It is not a de Polignac number, because 26425443587 - 2⁴ = 26425443571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26425443547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39917258 + ... + 39917919.

It is an arithmetic number, because the mean of its divisors is an integer number (6626319774).

Almost surely, 2^26425443587 is an apocalyptic number.

26425443587 is a deficient number, since it is larger than the sum of its proper divisors (79835509).

26425443587 is an equidigital number, since it uses as much as digits as its factorization.

26425443587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79835508.

The product of its digits is 6451200, while the sum is 50.

The spelling of 26425443587 in words is "twenty-six billion, four hundred twenty-five million, four hundred forty-three thousand, five hundred eighty-seven".