27487982025 has 81 divisors (see below), whose sum is σ = 57308533191. Its totient is φ = 12557976480.

The previous prime is 27487982017. The next prime is 27487982029. The reversal of 27487982025 is 52028978472.

The square root of 27487982025 is 165795.

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

27487982025 is a `hidden beast` number, since 274 + 87 + 98 + 202 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9895673529 + 17592308496 = 99477^2 + 132636^2 .

It is not a de Polignac number, because 27487982025 - 2³ = 27487982017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27487982029) by changing a digit.

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 80 ways as a sum of consecutive naturals, for example, 17407686 + ... + 17409264.

Almost surely, 2^27487982025 is an apocalyptic number.

27487982025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27487982025 is the 165795-th square number.

27487982025 is the 82898-th centered octagonal number.

It is an amenable number.

27487982025 is an abundant number, since it is smaller than the sum of its proper divisors (29820551166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27487982025 is an equidigital number, since it uses as much as digits as its factorization.

27487982025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 27487982025 in words is "twenty-seven billion, four hundred eighty-seven million, nine hundred eighty-two thousand, twenty-five".