70859778025 has 9 divisors (see below), whose sum is σ = 87867775191. Its totient is φ = 56686757640.

The previous prime is 70859777993. The next prime is 70859778047. The reversal of 70859778025 is 52087795807.

The square root of 70859778025 is 266195.

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., 25509520089 + 45350257936 = 159717^2 + 212956^2 .

It is not a de Polignac number, because 70859778025 - 2⁵ = 70859777993 is a prime.

It is a super-2 number, since 2×70859778025² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1304356 + ... + 1357594.

Almost surely, 2^70859778025 is an apocalyptic number.

70859778025 is the 266195-th square number.

70859778025 is the 133098-th centered octagonal number.

It is an amenable number.

70859778025 is a deficient number, since it is larger than the sum of its proper divisors (17007997166).

70859778025 is an frugal number, since it uses more digits than its factorization.

70859778025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106488 (or 53244 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 58.

The spelling of 70859778025 in words is "seventy billion, eight hundred fifty-nine million, seven hundred seventy-eight thousand, twenty-five".