68211225 has 54 divisors (see below), whose sum is σ = 129907050. Its totient is φ = 34206720.

The previous prime is 68211181. The next prime is 68211289. The reversal of 68211225 is 52211286.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 144 + 68211081 = 12^2 + 8259^2 .

It is not a de Polignac number, because 68211225 - 2⁷ = 68211097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 64501 + ... + 65549.

Almost surely, 2^68211225 is an apocalyptic number.

It is an amenable number.

68211225 is a deficient number, since it is larger than the sum of its proper divisors (61695825).

68211225 is a wasteful number, since it uses less digits than its factorization.

68211225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1074 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 68211225 is about 8259.0087177578. The cubic root of 68211225 is about 408.5876947281.

The spelling of 68211225 in words is "sixty-eight million, two hundred eleven thousand, two hundred twenty-five".