12117725 has 24 divisors (see below), whose sum is σ = 16040640. Its totient is φ = 9054720.

The previous prime is 12117713. The next prime is 12117727. The reversal of 12117725 is 52771121.

It is not a de Polignac number, because 12117725 - 2⁴ = 12117709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12117694 and 12117703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45944 + ... + 46206.

It is an arithmetic number, because the mean of its divisors is an integer number (668360).

Almost surely, 2^12117725 is an apocalyptic number.

It is an amenable number.

12117725 is a deficient number, since it is larger than the sum of its proper divisors (3922915).

12117725 is a wasteful number, since it uses less digits than its factorization.

12117725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 384 counting only the distinct ones).

The product of its digits is 980, while the sum is 26.

The square root of 12117725 is about 3481.0522834338. The cubic root of 12117725 is about 229.6890884090.

Adding to 12117725 its reverse (52771121), we get a palindrome (64888846).

It can be divided in two parts, 1211 and 7725, that multiplied together give a triangular number (9354975 = T₄₃₂₅).

The spelling of 12117725 in words is "twelve million, one hundred seventeen thousand, seven hundred twenty-five".