68310225 has 81 divisors (see below), whose sum is σ = 133735953. Its totient is φ = 33324480.

The previous prime is 68310211. The next prime is 68310247. The reversal of 68310225 is 52201386.

The square root of 68310225 is 8265.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 938961 + 67371264 = 969^2 + 8208^2 .

It is not a de Polignac number, because 68310225 - 2⁹ = 68309713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2355511 + ... + 2355539.

Almost surely, 2^68310225 is an apocalyptic number.

68310225 is the 8265-th square number.

68310225 is the 4133-rd centered octagonal number.

It is an amenable number.

68310225 is a deficient number, since it is larger than the sum of its proper divisors (65425728).

68310225 is a wasteful number, since it uses less digits than its factorization.

68310225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The cubic root of 68310225 is about 408.7852703622.

The spelling of 68310225 in words is "sixty-eight million, three hundred ten thousand, two hundred twenty-five".