12525516 has 60 divisors (see below), whose sum is σ = 33290488. Its totient is φ = 4105728.

The previous prime is 12525511. The next prime is 12525533. The reversal of 12525516 is 61552521.

12525516 is a `hidden beast` number, since 125 + 25 + 516 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12525516.

It is not an unprimeable number, because it can be changed into a prime (12525511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21420 + ... + 21996.

Almost surely, 2^12525516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12525516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16645244).

12525516 is an abundant number, since it is smaller than the sum of its proper divisors (20764972).

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

12525516 is a wasteful number, since it uses less digits than its factorization.

12525516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 649 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 12525516 is about 3539.1405736421. The cubic root of 12525516 is about 232.2372473950.

It can be divided in two parts, 12525 and 516, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12525516 in words is "twelve million, five hundred twenty-five thousand, five hundred sixteen".