27525252757 has 2 divisors, whose sum is σ = 27525252758. Its totient is φ = 27525252756.

The previous prime is 27525252743. The next prime is 27525252773. The reversal of 27525252757 is 75725252572.

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., 26898952081 + 626300676 = 164009^2 + 25026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27525252757 is a prime.

It is a super-2 number, since 2×27525252757² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27525252757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27525222757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13762626378 + 13762626379.

It is an arithmetic number, because the mean of its divisors is an integer number (13762626379).

Almost surely, 2^27525252757 is an apocalyptic number.

It is an amenable number.

27525252757 is a deficient number, since it is larger than the sum of its proper divisors (1).

27525252757 is an equidigital number, since it uses as much as digits as its factorization.

27525252757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3430000, while the sum is 49.

The spelling of 27525252757 in words is "twenty-seven billion, five hundred twenty-five million, two hundred fifty-two thousand, seven hundred fifty-seven".