68547094225 has 9 divisors (see below), whose sum is σ = 85000020123. Its totient is φ = 54836628120.

The previous prime is 68547094183. The next prime is 68547094237. The reversal of 68547094225 is 52249074586.

It is a happy number.

The square root of 68547094225 is 261815.

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

It can be written as a sum of positive squares in only one way, i.e., 24676953921 + 43870140304 = 157089^2 + 209452^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68547094225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1282894 + ... + 1335256.

Almost surely, 2^68547094225 is an apocalyptic number.

68547094225 is the 261815-th square number.

68547094225 is the 130908-th centered octagonal number.

It is an amenable number.

68547094225 is a deficient number, since it is larger than the sum of its proper divisors (16452925898).

68547094225 is an frugal number, since it uses more digits than its factorization.

68547094225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104736 (or 52368 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 68547094225 in words is "sixty-eight billion, five hundred forty-seven million, ninety-four thousand, two hundred twenty-five".