12325551 has 32 divisors (see below), whose sum is σ = 19991040. Its totient is φ = 6604416.

The previous prime is 12325549. The next prime is 12325553. The reversal of 12325551 is 15552321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12325549) and next prime (12325553).

It is not a de Polignac number, because 12325551 - 2¹ = 12325549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12325553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22260 + ... + 22806.

It is an arithmetic number, because the mean of its divisors is an integer number (624720).

Almost surely, 2^12325551 is an apocalyptic number.

12325551 is a deficient number, since it is larger than the sum of its proper divisors (7665489).

12325551 is a wasteful number, since it uses less digits than its factorization.

12325551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its digits is 1500, while the sum is 24.

The square root of 12325551 is about 3510.7764098558. The cubic root of 12325551 is about 230.9947526028.

Adding to 12325551 its reverse (15552321), we get a palindrome (27877872).

The spelling of 12325551 in words is "twelve million, three hundred twenty-five thousand, five hundred fifty-one".