13776225 has 12 divisors (see below), whose sum is σ = 22776816. Its totient is φ = 7347280.

The previous prime is 13776209. The next prime is 13776227. The reversal of 13776225 is 52267731.

It is not a de Polignac number, because 13776225 - 2⁴ = 13776209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13776227) 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 11 ways as a sum of consecutive naturals, for example, 91767 + ... + 91916.

It is an arithmetic number, because the mean of its divisors is an integer number (1898068).

Almost surely, 2^13776225 is an apocalyptic number.

13776225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13776225 is a deficient number, since it is larger than the sum of its proper divisors (9000591).

13776225 is a wasteful number, since it uses less digits than its factorization.

13776225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183696 (or 183691 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 13776225 is about 3711.6337373184. The cubic root of 13776225 is about 239.7232051976.

The spelling of 13776225 in words is "thirteen million, seven hundred seventy-six thousand, two hundred twenty-five".