27525527749 has 2 divisors, whose sum is σ = 27525527750. Its totient is φ = 27525527748.

The previous prime is 27525527737. The next prime is 27525527773. The reversal of 27525527749 is 94772552572.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26409500100 + 1116027649 = 162510^2 + 33407^2 .

It is a cyclic number.

It is not a de Polignac number, because 27525527749 - 2⁵ = 27525527717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27525527749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27525524749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13762763874 + 13762763875.

It is an arithmetic number, because the mean of its divisors is an integer number (13762763875).

Almost surely, 2^27525527749 is an apocalyptic number.

It is an amenable number.

27525527749 is a deficient number, since it is larger than the sum of its proper divisors (1).

27525527749 is an equidigital number, since it uses as much as digits as its factorization.

27525527749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348000, while the sum is 55.

The spelling of 27525527749 in words is "twenty-seven billion, five hundred twenty-five million, five hundred twenty-seven thousand, seven hundred forty-nine".