696699049225 has 27 divisors (see below), whose sum is σ = 873412396671. Its totient is φ = 551292748800.

The previous prime is 696699049201. The next prime is 696699049231. The reversal of 696699049225 is 522940996696.

The square root of 696699049225 is 834685.

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

It can be written as a sum of positive squares in 13 ways, for example, as 309611006329 + 387088042896 = 556427^2 + 622164^2 .

It is not a de Polignac number, because 696699049225 - 2¹³ = 696699041033 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, 404821365 + ... + 404823085.

Almost surely, 2^696699049225 is an apocalyptic number.

696699049225 is the 834685-th square number.

696699049225 is the 417343-rd centered octagonal number.

It is an amenable number.

696699049225 is a deficient number, since it is larger than the sum of its proper divisors (176713347446).

696699049225 is an frugal number, since it uses more digits than its factorization.

696699049225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 113374080, while the sum is 67.

The spelling of 696699049225 in words is "six hundred ninety-six billion, six hundred ninety-nine million, forty-nine thousand, two hundred twenty-five".