27525252497 has 4 divisors (see below), whose sum is σ = 27525684516. Its totient is φ = 27524820480.

The previous prime is 27525252487. The next prime is 27525252499. The reversal of 27525252497 is 79425252572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3912627601 + 23612624896 = 62551^2 + 153664^2 .

It is a cyclic number.

It is not a de Polignac number, because 27525252497 - 2¹⁴ = 27525236113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27525252499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99488 + ... + 254849.

It is an arithmetic number, because the mean of its divisors is an integer number (6881421129).

Almost surely, 2^27525252497 is an apocalyptic number.

It is an amenable number.

27525252497 is a deficient number, since it is larger than the sum of its proper divisors (432019).

27525252497 is an equidigital number, since it uses as much as digits as its factorization.

27525252497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432018.

The product of its digits is 3528000, while the sum is 50.

The spelling of 27525252497 in words is "twenty-seven billion, five hundred twenty-five million, two hundred fifty-two thousand, four hundred ninety-seven".