12149825 has 6 divisors (see below), whose sum is σ = 15065814. Its totient is φ = 9719840.

The previous prime is 12149803. The next prime is 12149827. The reversal of 12149825 is 52894121.

It can be written as a sum of positive squares in 3 ways, for example, as 261121 + 11888704 = 511^2 + 3448^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12149825 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 12149791 and 12149800.

It is not an unprimeable number, because it can be changed into a prime (12149827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242972 + ... + 243021.

It is an arithmetic number, because the mean of its divisors is an integer number (2510969).

Almost surely, 2^12149825 is an apocalyptic number.

It is an amenable number.

12149825 is a deficient number, since it is larger than the sum of its proper divisors (2915989).

12149825 is an equidigital number, since it uses as much as digits as its factorization.

12149825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486003 (or 485998 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 12149825 is about 3485.6599088264. The cubic root of 12149825 is about 229.8917259749.

The spelling of 12149825 in words is "twelve million, one hundred forty-nine thousand, eight hundred twenty-five".