18488956525 has 144 divisors (see below), whose sum is σ = 28479427200. Its totient is φ = 11767472640.

The previous prime is 18488956523. The next prime is 18488956529. The reversal of 18488956525 is 52565988481.

It is not a de Polignac number, because 18488956525 - 2¹ = 18488956523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18488956523) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 275954542 + ... + 275954608.

It is an arithmetic number, because the mean of its divisors is an integer number (197773800).

Almost surely, 2^18488956525 is an apocalyptic number.

It is an amenable number.

18488956525 is a deficient number, since it is larger than the sum of its proper divisors (9990470675).

18488956525 is a wasteful number, since it uses less digits than its factorization.

18488956525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 156 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 61.

The spelling of 18488956525 in words is "eighteen billion, four hundred eighty-eight million, nine hundred fifty-six thousand, five hundred twenty-five".