12522523530 has 48 divisors (see below), whose sum is σ = 33034633632. Its totient is φ = 3035762400.

The previous prime is 12522523513. The next prime is 12522523543. The reversal of 12522523530 is 3532522521.

12522523530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1721236 + ... + 1728495.

It is an arithmetic number, because the mean of its divisors is an integer number (688221534).

Almost surely, 2^12522523530 is an apocalyptic number.

12522523530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12522523530 is an abundant number, since it is smaller than the sum of its proper divisors (20512110102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12522523530 is a wasteful number, since it uses less digits than its factorization.

12522523530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449763 (or 3449752 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 12522523530 in words is "twelve billion, five hundred twenty-two million, five hundred twenty-three thousand, five hundred thirty".