13325643 has 6 divisors (see below), whose sum is σ = 19248164. Its totient is φ = 8883756.

The previous prime is 13325623. The next prime is 13325677. The reversal of 13325643 is 34652331.

It is a happy number.

13325643 is a `hidden beast` number, since 13 + 3 + 2 + 5 + 643 = 666.

It is not a de Polignac number, because 13325643 - 2⁸ = 13325387 is a prime.

It is a super-2 number, since 2×13325643² = 355145522726898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13325623) 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 5 ways as a sum of consecutive naturals, for example, 740305 + ... + 740322.

Almost surely, 2^13325643 is an apocalyptic number.

13325643 is a deficient number, since it is larger than the sum of its proper divisors (5922521).

13325643 is a wasteful number, since it uses less digits than its factorization.

13325643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480633 (or 1480630 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 13325643 is about 3650.4305225548. The cubic root of 13325643 is about 237.0806220397.

Adding to 13325643 its reverse (34652331), we get a palindrome (47977974).

The spelling of 13325643 in words is "thirteen million, three hundred twenty-five thousand, six hundred forty-three".