12205725 has 48 divisors (see below), whose sum is σ = 23474688. Its totient is φ = 5480640.

The previous prime is 12205691. The next prime is 12205747. The reversal of 12205725 is 52750221.

It is not a de Polignac number, because 12205725 - 2⁹ = 12205213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12205695 and 12205704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35002 + ... + 35348.

It is an arithmetic number, because the mean of its divisors is an integer number (489056).

Almost surely, 2^12205725 is an apocalyptic number.

12205725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12205725 is a deficient number, since it is larger than the sum of its proper divisors (11268963).

12205725 is a wasteful number, since it uses less digits than its factorization.

12205725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 12205725 is about 3493.6692745593. The cubic root of 12205725 is about 230.2437554378.

Adding to 12205725 its reverse (52750221), we get a palindrome (64955946).

The spelling of 12205725 in words is "twelve million, two hundred five thousand, seven hundred twenty-five".