12491325 has 108 divisors (see below), whose sum is σ = 28667808. Its totient is φ = 5140800.

The previous prime is 12491321. The next prime is 12491329. The reversal of 12491325 is 52319421.

It is an interprime number because it is at equal distance from previous prime (12491321) and next prime (12491329).

It is not a de Polignac number, because 12491325 - 2² = 12491321 is a prime.

Its product of digits (2160) is a multiple of the sum of its prime factors (144).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12491321) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 121224 + ... + 121326.

Almost surely, 2^12491325 is an apocalyptic number.

12491325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12491325 is an abundant number, since it is smaller than the sum of its proper divisors (16176483).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12491325 is a wasteful number, since it uses less digits than its factorization.

12491325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 129 counting only the distinct ones).

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

The square root of 12491325 is about 3534.3068627384. The cubic root of 12491325 is about 232.0257415452.

The spelling of 12491325 in words is "twelve million, four hundred ninety-one thousand, three hundred twenty-five".