791788530625 has 15 divisors (see below), whose sum is σ = 989446746783. Its totient is φ = 633413028000.

The previous prime is 791788530587. The next prime is 791788530641. The reversal of 791788530625 is 526035887197.

The square root of 791788530625 is 889825.

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

It can be written as a sum of positive squares in 7 ways, for example, as 789739700929 + 2048829696 = 888673^2 + 45264^2 .

It is not a de Polignac number, because 791788530625 - 2³⁷ = 654349577153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 22227829 + ... + 22263421.

Almost surely, 2^791788530625 is an apocalyptic number.

791788530625 is the 889825-th square number.

791788530625 is the 444913-rd centered octagonal number.

It is an amenable number.

791788530625 is a deficient number, since it is larger than the sum of its proper divisors (197658216158).

791788530625 is an frugal number, since it uses more digits than its factorization.

791788530625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71206 (or 35598 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 791788530625 in words is "seven hundred ninety-one billion, seven hundred eighty-eight million, five hundred thirty thousand, six hundred twenty-five".