27525649 has 2 divisors, whose sum is σ = 27525650. Its totient is φ = 27525648.

The previous prime is 27525581. The next prime is 27525671. The reversal of 27525649 is 94652572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 1871424 = 5065^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 27525649 - 2⁹ = 27525137 is a prime.

It is a super-2 number, since 2×27525649² = 1515322705742402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27525679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13762824 + 13762825.

It is an arithmetic number, because the mean of its divisors is an integer number (13762825).

Almost surely, 2^27525649 is an apocalyptic number.

It is an amenable number.

27525649 is a deficient number, since it is larger than the sum of its proper divisors (1).

27525649 is an equidigital number, since it uses as much as digits as its factorization.

27525649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 27525649 is about 5246.4892070793. The cubic root of 27525649 is about 301.9343489882.

The spelling of 27525649 in words is "twenty-seven million, five hundred twenty-five thousand, six hundred forty-nine".