27259000609 has 3 divisors (see below), whose sum is σ = 27259165713. Its totient is φ = 27258835506.

The previous prime is 27259000607. The next prime is 27259000649. The reversal of 27259000609 is 90600095272.

It is a happy number.

The square root of 27259000609 is 165103.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 27259000609 - 2¹ = 27259000607 is a prime.

It is a super-2 number, since 2×27259000609² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27259000603) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 82552 + ... + 247654.

It is an arithmetic number, because the mean of its divisors is an integer number (9086388571).

Almost surely, 2^27259000609 is an apocalyptic number.

27259000609 is the 165103-rd square number.

27259000609 is the 82552-nd centered octagonal number.

It is an amenable number.

27259000609 is a deficient number, since it is larger than the sum of its proper divisors (165104).

27259000609 is an frugal number, since it uses more digits than its factorization.

27259000609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330206 (or 165103 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 27259000609 in words is "twenty-seven billion, two hundred fifty-nine million, six hundred nine", and thus it is an aban number.