26725139287 has 8 divisors (see below), whose sum is σ = 33319654272. Its totient is φ = 20824783800.

The previous prime is 26725139279. The next prime is 26725139393. The reversal of 26725139287 is 78293152762.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26725139287 - 2³ = 26725139279 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 (26725139887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173539789 + ... + 173539942.

It is an arithmetic number, because the mean of its divisors is an integer number (4164956784).

Almost surely, 2^26725139287 is an apocalyptic number.

26725139287 is a deficient number, since it is larger than the sum of its proper divisors (6594514985).

26725139287 is a wasteful number, since it uses less digits than its factorization.

26725139287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347079749.

The product of its digits is 2540160, while the sum is 52.

The spelling of 26725139287 in words is "twenty-six billion, seven hundred twenty-five million, one hundred thirty-nine thousand, two hundred eighty-seven".