13773425 has 6 divisors (see below), whose sum is σ = 17079078. Its totient is φ = 11018720.

The previous prime is 13773379. The next prime is 13773427. The reversal of 13773425 is 52437731.

It can be written as a sum of positive squares in 3 ways, for example, as 1270129 + 12503296 = 1127^2 + 3536^2 .

It is not a de Polignac number, because 13773425 - 2⁸ = 13773169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13773391 and 13773400.

It is not an unprimeable number, because it can be changed into a prime (13773427) 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 5 ways as a sum of consecutive naturals, for example, 275444 + ... + 275493.

It is an arithmetic number, because the mean of its divisors is an integer number (2846513).

Almost surely, 2^13773425 is an apocalyptic number.

It is an amenable number.

13773425 is a deficient number, since it is larger than the sum of its proper divisors (3305653).

13773425 is an equidigital number, since it uses as much as digits as its factorization.

13773425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550947 (or 550942 counting only the distinct ones).

The product of its digits is 17640, while the sum is 32.

The square root of 13773425 is about 3711.2565257605. The cubic root of 13773425 is about 239.7069629528.

The spelling of 13773425 in words is "thirteen million, seven hundred seventy-three thousand, four hundred twenty-five".