397233970225 has 27 divisors (see below), whose sum is σ = 495609326499. Its totient is φ = 315838396800.

The previous prime is 397233970223. The next prime is 397233970229. The reversal of 397233970225 is 522079332793.

The square root of 397233970225 is 630265.

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 377950759729 + 19283210496 = 614777^2 + 138864^2 .

It is not a de Polignac number, because 397233970225 - 2¹ = 397233970223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397233970223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 734258455 + ... + 734258995.

Almost surely, 2^397233970225 is an apocalyptic number.

397233970225 is the 630265-th square number.

397233970225 is the 315133-rd centered octagonal number.

It is an amenable number.

397233970225 is a deficient number, since it is larger than the sum of its proper divisors (98375356274).

397233970225 is an frugal number, since it uses more digits than its factorization.

397233970225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 52.

The spelling of 397233970225 in words is "three hundred ninety-seven billion, two hundred thirty-three million, nine hundred seventy thousand, two hundred twenty-five".