70025856689 has 4 divisors (see below), whose sum is σ = 70388685156. Its totient is φ = 69663028224.

The previous prime is 70025856679. The next prime is 70025856701. The reversal of 70025856689 is 98665852007.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25964488225 + 44061368464 = 161135^2 + 209908^2 .

It is a cyclic number.

It is not a de Polignac number, because 70025856689 - 2²⁴ = 70009079473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70025856679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181413944 + ... + 181414329.

It is an arithmetic number, because the mean of its divisors is an integer number (17597171289).

Almost surely, 2^70025856689 is an apocalyptic number.

It is an amenable number.

70025856689 is a deficient number, since it is larger than the sum of its proper divisors (362828467).

70025856689 is a wasteful number, since it uses less digits than its factorization.

70025856689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362828466.

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 70025856689 in words is "seventy billion, twenty-five million, eight hundred fifty-six thousand, six hundred eighty-nine".