12621325 has 6 divisors (see below), whose sum is σ = 15650474. Its totient is φ = 10097040.

The previous prime is 12621307. The next prime is 12621337. The reversal of 12621325 is 52312621.

It can be written as a sum of positive squares in 3 ways, for example, as 2368521 + 10252804 = 1539^2 + 3202^2 .

It is not a de Polignac number, because 12621325 - 2⁷ = 12621197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12621296 and 12621305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252402 + ... + 252451.

Almost surely, 2^12621325 is an apocalyptic number.

It is an amenable number.

12621325 is a deficient number, since it is larger than the sum of its proper divisors (3029149).

12621325 is an equidigital number, since it uses as much as digits as its factorization.

12621325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504863 (or 504858 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 12621325 is about 3552.6504190534. The cubic root of 12621325 is about 232.8278797851.

Adding to 12621325 its reverse (52312621), we get a palindrome (64933946).

The spelling of 12621325 in words is "twelve million, six hundred twenty-one thousand, three hundred twenty-five".