12485109 has 64 divisors (see below), whose sum is σ = 22579200. Its totient is φ = 5951232.

The previous prime is 12485063. The next prime is 12485141. The reversal of 12485109 is 90158421.

It is a happy number.

It is not a de Polignac number, because 12485109 - 2⁹ = 12484597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12483109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 150382 + ... + 150464.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^12485109 is an apocalyptic number.

12485109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12485109 is a deficient number, since it is larger than the sum of its proper divisors (10094091).

12485109 is a wasteful number, since it uses less digits than its factorization.

12485109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 12485109 is about 3533.4273729624. The cubic root of 12485109 is about 231.9872478623.

The spelling of 12485109 in words is "twelve million, four hundred eighty-five thousand, one hundred nine".