12500520 has 64 divisors (see below), whose sum is σ = 38041920. Its totient is φ = 3285504.

The previous prime is 12500519. The next prime is 12500539. The reversal of 12500520 is 2500521.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12500520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8047 + ... + 9473.

It is an arithmetic number, because the mean of its divisors is an integer number (594405).

Almost surely, 2^12500520 is an apocalyptic number.

12500520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12500520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19020960).

12500520 is an abundant number, since it is smaller than the sum of its proper divisors (25541400).

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

12500520 is a wasteful number, since it uses less digits than its factorization.

12500520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 12500520 is about 3535.6074442732. The cubic root of 12500520 is about 232.0826598043.

Subtracting from 12500520 its reverse (2500521), we obtain a palindrome (9999999).

The spelling of 12500520 in words is "twelve million, five hundred thousand, five hundred twenty".