12290625 has 72 divisors (see below), whose sum is σ = 24373440. Its totient is φ = 5940000.

The previous prime is 12290617. The next prime is 12290627. The reversal of 12290625 is 52609221.

12290625 is a `hidden beast` number, since 12 + 29 + 0 + 625 = 666.

It is not a de Polignac number, because 12290625 - 2³ = 12290617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12290627) 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 71 ways as a sum of consecutive naturals, for example, 534364 + ... + 534386.

It is an arithmetic number, because the mean of its divisors is an integer number (338520).

Almost surely, 2^12290625 is an apocalyptic number.

12290625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12290625 is a deficient number, since it is larger than the sum of its proper divisors (12082815).

12290625 is an equidigital number, since it uses as much as digits as its factorization.

12290625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12290625 is about 3505.7987677561. The cubic root of 12290625 is about 230.7763619591.

Adding to 12290625 its reverse (52609221), we get a palindrome (64899846).

The spelling of 12290625 in words is "twelve million, two hundred ninety thousand, six hundred twenty-five".