12189725 has 6 divisors (see below), whose sum is σ = 15115290. Its totient is φ = 9751760.

The previous prime is 12189703. The next prime is 12189733. The reversal of 12189725 is 52798121.

It can be written as a sum of positive squares in 3 ways, for example, as 994009 + 11195716 = 997^2 + 3346^2 .

It is not a de Polignac number, because 12189725 - 2¹² = 12185629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243770 + ... + 243819.

It is an arithmetic number, because the mean of its divisors is an integer number (2519215).

Almost surely, 2^12189725 is an apocalyptic number.

It is an amenable number.

12189725 is a deficient number, since it is larger than the sum of its proper divisors (2925565).

12189725 is an equidigital number, since it uses as much as digits as its factorization.

12189725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487599 (or 487594 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 12189725 is about 3491.3786675180. The cubic root of 12189725 is about 230.1431056484.

The spelling of 12189725 in words is "twelve million, one hundred eighty-nine thousand, seven hundred twenty-five".