12525520 has 40 divisors (see below), whose sum is σ = 33283584. Its totient is φ = 4294272.

The previous prime is 12525511. The next prime is 12525533. The reversal of 12525520 is 2552521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 12525491 and 12525500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10624 + ... + 11743.

Almost surely, 2^12525520 is an apocalyptic number.

12525520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12525520 is an abundant number, since it is smaller than the sum of its proper divisors (20758064).

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

12525520 is a wasteful number, since it uses less digits than its factorization.

12525520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22387 (or 22381 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 12525520 is about 3539.1411387510. The cubic root of 12525520 is about 232.2372721165.

The spelling of 12525520 in words is "twelve million, five hundred twenty-five thousand, five hundred twenty".