26425515839 has 4 divisors (see below), whose sum is σ = 26435909856. Its totient is φ = 26415121824.

The previous prime is 26425515821. The next prime is 26425515869. The reversal of 26425515839 is 93851552462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93851552462 = 2 ⋅46925776231.

It is a cyclic number.

It is not a de Polignac number, because 26425515839 - 2¹² = 26425511743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26425515869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5193194 + ... + 5198279.

It is an arithmetic number, because the mean of its divisors is an integer number (6608977464).

Almost surely, 2^26425515839 is an apocalyptic number.

26425515839 is a deficient number, since it is larger than the sum of its proper divisors (10394017).

26425515839 is a wasteful number, since it uses less digits than its factorization.

26425515839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10394016.

The product of its digits is 2592000, while the sum is 50.

The spelling of 26425515839 in words is "twenty-six billion, four hundred twenty-five million, five hundred fifteen thousand, eight hundred thirty-nine".