27121747325 has 12 divisors (see below), whose sum is σ = 34715837568. Its totient is φ = 20997481200.

The previous prime is 27121747321. The next prime is 27121747327. The reversal of 27121747325 is 52374712172.

It is not a de Polignac number, because 27121747325 - 2² = 27121747321 is a prime.

It is a super-2 number, since 2×27121747325² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27121747321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17497127 + ... + 17498676.

It is an arithmetic number, because the mean of its divisors is an integer number (2892986464).

Almost surely, 2^27121747325 is an apocalyptic number.

27121747325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27121747325 is a deficient number, since it is larger than the sum of its proper divisors (7594090243).

27121747325 is a wasteful number, since it uses less digits than its factorization.

27121747325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34995844 (or 34995839 counting only the distinct ones).

The product of its digits is 164640, while the sum is 41.

The spelling of 27121747325 in words is "twenty-seven billion, one hundred twenty-one million, seven hundred forty-seven thousand, three hundred twenty-five".