27550505525 has 12 divisors (see below), whose sum is σ = 34672518912. Its totient is φ = 21711441840.

The previous prime is 27550505513. The next prime is 27550505531. The reversal of 27550505525 is 52550505572.

It is a de Polignac number, because none of the positive numbers 2^k-27550505525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 8222357 + ... + 8225706.

It is an arithmetic number, because the mean of its divisors is an integer number (2889376576).

Almost surely, 2^27550505525 is an apocalyptic number.

27550505525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27550505525 is a deficient number, since it is larger than the sum of its proper divisors (7122013387).

27550505525 is a wasteful number, since it uses less digits than its factorization.

27550505525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16448140 (or 16448135 counting only the distinct ones).

The product of its (nonzero) digits is 437500, while the sum is 41.

The spelling of 27550505525 in words is "twenty-seven billion, five hundred fifty million, five hundred five thousand, five hundred twenty-five".