12491625 has 16 divisors (see below), whose sum is σ = 20786688. Its totient is φ = 6662000.

The previous prime is 12491603. The next prime is 12491627. The reversal of 12491625 is 52619421.

It is not a de Polignac number, because 12491625 - 2⁷ = 12491497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12491592 and 12491601.

It is not an unprimeable number, because it can be changed into a prime (12491627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16281 + ... + 17030.

It is an arithmetic number, because the mean of its divisors is an integer number (1299168).

Almost surely, 2^12491625 is an apocalyptic number.

12491625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12491625 is a deficient number, since it is larger than the sum of its proper divisors (8295063).

12491625 is an equidigital number, since it uses as much as digits as its factorization.

12491625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33329 (or 33319 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 12491625 is about 3534.3493036201. The cubic root of 12491625 is about 232.0275990254.

The spelling of 12491625 in words is "twelve million, four hundred ninety-one thousand, six hundred twenty-five".