12009925 has 12 divisors (see below), whose sum is σ = 15256836. Its totient is φ = 9372800.

The previous prime is 12009923. The next prime is 12009937. The reversal of 12009925 is 52990021.

12009925 is digitally balanced in base 2, 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 6 ways, for example, as 5987809 + 6022116 = 2447^2 + 2454^2 .

It is not a de Polignac number, because 12009925 - 2¹ = 12009923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12009893 and 12009902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4834 + ... + 6883.

It is an arithmetic number, because the mean of its divisors is an integer number (1271403).

Almost surely, 2^12009925 is an apocalyptic number.

It is an amenable number.

12009925 is a deficient number, since it is larger than the sum of its proper divisors (3246911).

12009925 is a wasteful number, since it uses less digits than its factorization.

12009925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11768 (or 11763 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 12009925 is about 3465.5338694060. The cubic root of 12009925 is about 229.0059493887.

Adding to 12009925 its reverse (52990021), we get a palindrome (64999946).

It can be divided in two parts, 120099 and 25, that multiplied together give a triangular number (3002475 = T₂₄₅₀).

The spelling of 12009925 in words is "twelve million, nine thousand, nine hundred twenty-five".