27089890992025 has 9 divisors (see below), whose sum is σ = 33591497099871. Its totient is φ = 21671891974440.

The previous prime is 27089890991953. The next prime is 27089890992041. The reversal of 27089890992025 is 52029909898072.

The square root of 27089890992025 is 5204795.

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

It can be written as a sum of positive squares in only one way, i.e., 9752360757129 + 17337530234896 = 3122877^2 + 4163836^2 .

It is not a de Polignac number, because 27089890992025 - 2⁷ = 27089890991897 is a prime.

It is a super-2 number, since 2×27089890992025² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25503496 + ... + 26544454.

Almost surely, 2^{27089890992025} is an apocalyptic number.

27089890992025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27089890992025 is the 5204795-th square number.

27089890992025 is the 2602398-th centered octagonal number.

It is an amenable number.

27089890992025 is a deficient number, since it is larger than the sum of its proper divisors (6501606107846).

27089890992025 is an frugal number, since it uses more digits than its factorization.

27089890992025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081928 (or 1040964 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 70.

The spelling of 27089890992025 in words is "twenty-seven trillion, eighty-nine billion, eight hundred ninety million, nine hundred ninety-two thousand, twenty-five".