694313895025 has 27 divisors (see below), whose sum is σ = 914665669921. Its totient is φ = 522724192640.

The previous prime is 694313895013. The next prime is 694313895043. The reversal of 694313895025 is 520598313496.

The square root of 694313895025 is 833255.

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

It can be written as a sum of positive squares in 4 ways, for example, as 16240698721 + 678073196304 = 127439^2 + 823452^2 .

It is not a de Polignac number, because 694313895025 - 2⁵ = 694313894993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 70821774 + ... + 70831576.

Almost surely, 2^694313895025 is an apocalyptic number.

694313895025 is the 833255-th square number.

694313895025 is the 416628-th centered octagonal number.

It is an amenable number.

694313895025 is a deficient number, since it is larger than the sum of its proper divisors (220351774896).

694313895025 is an frugal number, since it uses more digits than its factorization.

694313895025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19650 (or 9825 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 694313895025 in words is "six hundred ninety-four billion, three hundred thirteen million, eight hundred ninety-five thousand, twenty-five".