12205550525 has 24 divisors (see below), whose sum is σ = 17349347904. Its totient is φ = 8344195200.

The previous prime is 12205550509. The next prime is 12205550531. The reversal of 12205550525 is 52505550221.

It is not a de Polignac number, because 12205550525 - 2⁴ = 12205550509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12205550491 and 12205550500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47432 + ... + 163281.

It is an arithmetic number, because the mean of its divisors is an integer number (722889496).

Almost surely, 2^12205550525 is an apocalyptic number.

It is an amenable number.

12205550525 is a deficient number, since it is larger than the sum of its proper divisors (5143797379).

12205550525 is a wasteful number, since it uses less digits than its factorization.

12205550525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211061 (or 211056 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 12205550525 in words is "twelve billion, two hundred five million, five hundred fifty thousand, five hundred twenty-five".