67776225 has 24 divisors (see below), whose sum is σ = 122245152. Its totient is φ = 32860800.

The previous prime is 67776187. The next prime is 67776253. The reversal of 67776225 is 52267776.

It is not a de Polignac number, because 67776225 - 2¹⁸ = 67514081 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 40252 + ... + 41901.

It is an arithmetic number, because the mean of its divisors is an integer number (5093548).

Almost surely, 2^67776225 is an apocalyptic number.

It is an amenable number.

67776225 is a deficient number, since it is larger than the sum of its proper divisors (54468927).

67776225 is a wasteful number, since it uses less digits than its factorization.

67776225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82177 (or 82172 counting only the distinct ones).

The product of its digits is 246960, while the sum is 42.

The square root of 67776225 is about 8232.6317177437. The cubic root of 67776225 is about 407.7172866047.

The spelling of 67776225 in words is "sixty-seven million, seven hundred seventy-six thousand, two hundred twenty-five".