12520540500 has 96 divisors (see below), whose sum is σ = 39264476160. Its totient is φ = 3081974400.

The previous prime is 12520540481. The next prime is 12520540507. The reversal of 12520540500 is 504502521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520540507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301540 + ... + 340539.

It is an arithmetic number, because the mean of its divisors is an integer number (409004960).

Almost surely, 2^12520540500 is an apocalyptic number.

12520540500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12520540500 is an abundant number, since it is smaller than the sum of its proper divisors (26743935660).

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

12520540500 is a wasteful number, since it uses less digits than its factorization.

12520540500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642114 (or 642102 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The spelling of 12520540500 in words is "twelve billion, five hundred twenty million, five hundred forty thousand, five hundred".