4393069281225 has 135 divisors (see below), whose sum is σ = 8322702899511. Its totient is φ = 2290805906400.

The previous prime is 4393069281191. The next prime is 4393069281229. The reversal of 4393069281225 is 5221829603934.

The square root of 4393069281225 is 2095965.

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

4393069281225 is a `hidden beast` number, since 4 + 39 + 306 + 9 + 2 + 81 + 225 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1581504941241 + 2811564339984 = 1257579^2 + 1676772^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 4393069281225 - 2²⁷ = 4392935063497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4393069281229) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 4432965480 + ... + 4432966470.

Almost surely, 2^{4393069281225} is an apocalyptic number.

4393069281225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4393069281225 is the 2095965-th square number.

4393069281225 is the 1047983-rd centered octagonal number.

It is an amenable number.

4393069281225 is a deficient number, since it is larger than the sum of its proper divisors (3929633618286).

4393069281225 is an frugal number, since it uses more digits than its factorization.

4393069281225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 4393069281225 in words is "four trillion, three hundred ninety-three billion, sixty-nine million, two hundred eighty-one thousand, two hundred twenty-five".