27775251025 has 12 divisors (see below), whose sum is σ = 34445116800. Its totient is φ = 22217745680.

The previous prime is 27775251017. The next prime is 27775251029. The reversal of 27775251025 is 52015257772.

It is not a de Polignac number, because 27775251025 - 2³ = 27775251017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27775251029) 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 in 11 ways as a sum of consecutive naturals, for example, 189516 + ... + 302434.

It is an arithmetic number, because the mean of its divisors is an integer number (2870426400).

Almost surely, 2^27775251025 is an apocalyptic number.

27775251025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27775251025 is a deficient number, since it is larger than the sum of its proper divisors (6669865775).

27775251025 is a wasteful number, since it uses less digits than its factorization.

27775251025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122768 (or 122763 counting only the distinct ones).

The product of its (nonzero) digits is 343000, while the sum is 43.

The spelling of 27775251025 in words is "twenty-seven billion, seven hundred seventy-five million, two hundred fifty-one thousand, twenty-five".