27525013 has 2 divisors, whose sum is σ = 27525014. Its totient is φ = 27525012.

The previous prime is 27524971. The next prime is 27525049. The reversal of 27525013 is 31052572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27112849 + 412164 = 5207^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 27525013 - 2⁹ = 27524501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27525713) 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 as a sum of consecutive naturals, namely, 13762506 + 13762507.

It is an arithmetic number, because the mean of its divisors is an integer number (13762507).

Almost surely, 2^27525013 is an apocalyptic number.

It is an amenable number.

27525013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27525013 is an equidigital number, since it uses as much as digits as its factorization.

27525013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 27525013 is about 5246.4285947681. The cubic root of 27525013 is about 301.9320234999.

Adding to 27525013 its reverse (31052572), we get a palindrome (58577585).

The spelling of 27525013 in words is "twenty-seven million, five hundred twenty-five thousand, thirteen".