12090625 has 24 divisors (see below), whose sum is σ = 15608376. Its totient is φ = 9360000.

The previous prime is 12090623. The next prime is 12090641. The reversal of 12090625 is 52609021.

It can be written as a sum of positive squares in 12 ways, for example, as 11675889 + 414736 = 3417^2 + 644^2 .

It is not a de Polignac number, because 12090625 - 2¹ = 12090623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12090625.

It is not an unprimeable number, because it can be changed into a prime (12090623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165589 + ... + 165661.

It is an arithmetic number, because the mean of its divisors is an integer number (650349).

Almost surely, 2^12090625 is an apocalyptic number.

It is an amenable number.

12090625 is a deficient number, since it is larger than the sum of its proper divisors (3517751).

12090625 is an frugal number, since it uses more digits than its factorization.

12090625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12090625 is about 3477.1576035607. The cubic root of 12090625 is about 229.5177355555.

Adding to 12090625 its reverse (52609021), we get a palindrome (64699646).

The spelling of 12090625 in words is "twelve million, ninety thousand, six hundred twenty-five".