68224216825 has 12 divisors (see below), whose sum is σ = 89574384060. Its totient is φ = 51368821760.

The previous prime is 68224216741. The next prime is 68224216843. The reversal of 68224216825 is 52861242286.

It can be written as a sum of positive squares in 6 ways, for example, as 3287416896 + 64936799929 = 57336^2 + 254827^2 .

It is not a de Polignac number, because 68224216825 - 2³³ = 59634282233 is a prime.

It is a super-2 number, since 2×68224216825² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80263360 + ... + 80264209.

It is an arithmetic number, because the mean of its divisors is an integer number (7464532005).

Almost surely, 2^68224216825 is an apocalyptic number.

It is an amenable number.

68224216825 is a deficient number, since it is larger than the sum of its proper divisors (21350167235).

68224216825 is a wasteful number, since it uses less digits than its factorization.

68224216825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160527596 (or 160527591 counting only the distinct ones).

The product of its digits is 737280, while the sum is 46.

The spelling of 68224216825 in words is "sixty-eight billion, two hundred twenty-four million, two hundred sixteen thousand, eight hundred twenty-five".