18542525125 has 16 divisors (see below), whose sum is σ = 24359025600. Its totient is φ = 14053280400.

The previous prime is 18542525123. The next prime is 18542525137. The reversal of 18542525125 is 52152524581.

It is not a de Polignac number, because 18542525125 - 2¹ = 18542525123 is a prime.

It is a super-2 number, since 2×18542525125² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18542525123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3901315 + ... + 3906064.

It is an arithmetic number, because the mean of its divisors is an integer number (1522439100).

Almost surely, 2^18542525125 is an apocalyptic number.

It is an amenable number.

18542525125 is a deficient number, since it is larger than the sum of its proper divisors (5816500475).

18542525125 is an equidigital number, since it uses as much as digits as its factorization.

18542525125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7807413 (or 7807403 counting only the distinct ones).

The product of its digits is 160000, while the sum is 40.

The spelling of 18542525125 in words is "eighteen billion, five hundred forty-two million, five hundred twenty-five thousand, one hundred twenty-five".