27173874025 has 9 divisors (see below), whose sum is σ = 33696625861. Its totient is φ = 21738439840.

The previous prime is 27173874019. The next prime is 27173874067. The reversal of 27173874025 is 52047837172.

The square root of 27173874025 is 164845.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1919578969 + 25254295056 = 43813^2 + 158916^2 .

It is not a de Polignac number, because 27173874025 - 2²⁵ = 27140319593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 807741 + ... + 840709.

Almost surely, 2^27173874025 is an apocalyptic number.

27173874025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27173874025 is the 164845-th square number.

27173874025 is the 82423-rd centered octagonal number.

It is an amenable number.

27173874025 is a deficient number, since it is larger than the sum of its proper divisors (6522751836).

27173874025 is an frugal number, since it uses more digits than its factorization.

27173874025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65948 (or 32974 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 27173874025 in words is "twenty-seven billion, one hundred seventy-three million, eight hundred seventy-four thousand, twenty-five".