27765000125 has 32 divisors (see below), whose sum is σ = 35628622848. Its totient is φ = 21589200000.

The previous prime is 27765000119. The next prime is 27765000127. The reversal of 27765000125 is 52100056772.

It is a happy number.

It is not a de Polignac number, because 27765000125 - 2⁶ = 27765000061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27765000127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1378880 + ... + 1398870.

It is an arithmetic number, because the mean of its divisors is an integer number (1113394464).

Almost surely, 2^27765000125 is an apocalyptic number.

27765000125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27765000125 is a deficient number, since it is larger than the sum of its proper divisors (7863622723).

27765000125 is a wasteful number, since it uses less digits than its factorization.

27765000125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20318 (or 20308 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

Adding to 27765000125 its reverse (52100056772), we get a palindrome (79865056897).

The spelling of 27765000125 in words is "twenty-seven billion, seven hundred sixty-five million, one hundred twenty-five", and thus it is an aban number.