27129464125 has 32 divisors (see below), whose sum is σ = 34401744000. Its totient is φ = 21355488000.

The previous prime is 27129464123. The next prime is 27129464129. The reversal of 27129464125 is 52146492172.

It is not a de Polignac number, because 27129464125 - 2¹ = 27129464123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27129464123) 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, 12553045 + ... + 12555205.

It is an arithmetic number, because the mean of its divisors is an integer number (1075054500).

Almost surely, 2^27129464125 is an apocalyptic number.

27129464125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27129464125 is a deficient number, since it is larger than the sum of its proper divisors (7272279875).

27129464125 is a wasteful number, since it uses less digits than its factorization.

27129464125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742 (or 3732 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The spelling of 27129464125 in words is "twenty-seven billion, one hundred twenty-nine million, four hundred sixty-four thousand, one hundred twenty-five".