13125427 has 4 divisors (see below), whose sum is σ = 15000496. Its totient is φ = 11250360.

The previous prime is 13125421. The next prime is 13125439. The reversal of 13125427 is 72452131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13125427 - 2³ = 13125419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13125421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937524 + ... + 937537.

It is an arithmetic number, because the mean of its divisors is an integer number (3750124).

Almost surely, 2^13125427 is an apocalyptic number.

13125427 is a deficient number, since it is larger than the sum of its proper divisors (1875069).

13125427 is an equidigital number, since it uses as much as digits as its factorization.

13125427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875068.

The product of its digits is 1680, while the sum is 25.

The square root of 13125427 is about 3622.9031176668. The cubic root of 13125427 is about 235.8872570266.

Adding to 13125427 its reverse (72452131), we get a palindrome (85577558).

The spelling of 13125427 in words is "thirteen million, one hundred twenty-five thousand, four hundred twenty-seven".