12605520 has 80 divisors (see below), whose sum is σ = 39854592. Its totient is φ = 3294720.

The previous prime is 12605519. The next prime is 12605539. The reversal of 12605520 is 2550621.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12225 + ... + 13215.

Almost surely, 2^12605520 is an apocalyptic number.

12605520 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 12605520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19927296).

12605520 is an abundant number, since it is smaller than the sum of its proper divisors (27249072).

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

12605520 is a wasteful number, since it uses less digits than its factorization.

12605520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12605520 is about 3550.4253266334. The cubic root of 12605520 is about 232.7306532860.

The spelling of 12605520 in words is "twelve million, six hundred five thousand, five hundred twenty".