694247236225 has 9 divisors (see below), whose sum is σ = 860871738883. Its totient is φ = 555394456120.

The previous prime is 694247236211. The next prime is 694247236273. The reversal of 694247236225 is 522632742496.

The square root of 694247236225 is 833215.

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., 249929005041 + 444318231184 = 499929^2 + 666572^2 .

It is not a de Polignac number, because 694247236225 - 2¹⁹ = 694246711937 is a prime.

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, 4082754 + ... + 4249396.

Almost surely, 2^694247236225 is an apocalyptic number.

694247236225 is the 833215-th square number.

694247236225 is the 416608-th centered octagonal number.

It is an amenable number.

694247236225 is a deficient number, since it is larger than the sum of its proper divisors (166624502658).

694247236225 is an frugal number, since it uses more digits than its factorization.

694247236225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333296 (or 166648 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 52.

The spelling of 694247236225 in words is "six hundred ninety-four billion, two hundred forty-seven million, two hundred thirty-six thousand, two hundred twenty-five".