12159725 has 6 divisors (see below), whose sum is σ = 15078090. Its totient is φ = 9727760.

The previous prime is 12159703. The next prime is 12159731. The reversal of 12159725 is 52795121.

It is a happy number.

12159725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3433609 + 8726116 = 1853^2 + 2954^2 .

It is not a de Polignac number, because 12159725 - 2²² = 7965421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12159691 and 12159700.

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, 243170 + ... + 243219.

It is an arithmetic number, because the mean of its divisors is an integer number (2513015).

Almost surely, 2^12159725 is an apocalyptic number.

It is an amenable number.

12159725 is a deficient number, since it is larger than the sum of its proper divisors (2918365).

12159725 is an equidigital number, since it uses as much as digits as its factorization.

12159725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486399 (or 486394 counting only the distinct ones).

The product of its digits is 6300, while the sum is 32.

The square root of 12159725 is about 3487.0797237803. The cubic root of 12159725 is about 229.9541496505.

The spelling of 12159725 in words is "twelve million, one hundred fifty-nine thousand, seven hundred twenty-five".