18840522525 has 96 divisors (see below), whose sum is σ = 34676816256. Its totient is φ = 8949120000.

The previous prime is 18840522523. The next prime is 18840522529. The reversal of 18840522525 is 52522504881.

It is not a de Polignac number, because 18840522525 - 2¹ = 18840522523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18840522523) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15952435 + ... + 15953615.

It is an arithmetic number, because the mean of its divisors is an integer number (361216836).

Almost surely, 2^18840522525 is an apocalyptic number.

18840522525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18840522525 is a deficient number, since it is larger than the sum of its proper divisors (15836293731).

18840522525 is a wasteful number, since it uses less digits than its factorization.

18840522525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1578 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 42.

The spelling of 18840522525 in words is "eighteen billion, eight hundred forty million, five hundred twenty-two thousand, five hundred twenty-five".