13578425 has 12 divisors (see below), whose sum is σ = 19242816. Its totient is φ = 9310800.

The previous prime is 13578413. The next prime is 13578443. The reversal of 13578425 is 52487531.

It is a happy number.

It is not a de Polignac number, because 13578425 - 2⁶ = 13578361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38621 + ... + 38970.

It is an arithmetic number, because the mean of its divisors is an integer number (1603568).

Almost surely, 2^13578425 is an apocalyptic number.

It is an amenable number.

13578425 is a deficient number, since it is larger than the sum of its proper divisors (5664391).

13578425 is an equidigital number, since it uses as much as digits as its factorization.

13578425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77608 (or 77603 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 13578425 is about 3684.8914502330. The cubic root of 13578425 is about 238.5703490319.

The spelling of 13578425 in words is "thirteen million, five hundred seventy-eight thousand, four hundred twenty-five".