27090025 has 6 divisors (see below), whose sum is σ = 33591662. Its totient is φ = 21672000.

The previous prime is 27090023. The next prime is 27090047. The reversal of 27090025 is 52009072.

It can be written as a sum of positive squares in 3 ways, for example, as 2359296 + 24730729 = 1536^2 + 4973^2 .

It is not a de Polignac number, because 27090025 - 2¹ = 27090023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1083601 = 27090025 / (2 + 7 + 0 + 9 + 0 + 0 + 2 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27090023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541776 + ... + 541825.

Almost surely, 2^27090025 is an apocalyptic number.

27090025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27090025 is a deficient number, since it is larger than the sum of its proper divisors (6501637).

27090025 is a wasteful number, since it uses less digits than its factorization.

27090025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083611 (or 1083606 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 27090025 is about 5204.8078734954. The cubic root of 27090025 is about 300.3330560347. Note that the first 3 decimals are identical.

Adding to 27090025 its reverse (52009072), we get a palindrome (79099097).

The spelling of 27090025 in words is "twenty-seven million, ninety thousand, twenty-five".