694747255225 has 9 divisors (see below), whose sum is σ = 861491764303. Its totient is φ = 555794470120.

The previous prime is 694747255207. The next prime is 694747255231. The reversal of 694747255225 is 522552747496.

The square root of 694747255225 is 833515.

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., 250109011881 + 444638243344 = 500109^2 + 666812^2 .

It is not a de Polignac number, because 694747255225 - 2¹⁷ = 694747124153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 694747255225.

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, 4084224 + ... + 4250926.

Almost surely, 2^694747255225 is an apocalyptic number.

694747255225 is the 833515-th square number.

694747255225 is the 416758-th centered octagonal number.

It is an amenable number.

694747255225 is a deficient number, since it is larger than the sum of its proper divisors (166744509078).

694747255225 is an frugal number, since it uses more digits than its factorization.

694747255225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333416 (or 166708 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 58.

The spelling of 694747255225 in words is "six hundred ninety-four billion, seven hundred forty-seven million, two hundred fifty-five thousand, two hundred twenty-five".