213313435425 has 18 divisors (see below), whose sum is σ = 382068064742. Its totient is φ = 113767165440.

The previous prime is 213313435417. The next prime is 213313435427. The reversal of 213313435425 is 524534313312.

213313435425 is a `hidden beast` number, since 213 + 3 + 1 + 3 + 435 + 4 + 2 + 5 = 666.

213313435425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 22930439184 + 190382996241 = 151428^2 + 436329^2 .

It is not a de Polignac number, because 213313435425 - 2³ = 213313435417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213313435425.

It is not an unprimeable number, because it can be changed into a prime (213313435427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 474029632 + ... + 474030081.

Almost surely, 2^213313435425 is an apocalyptic number.

213313435425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213313435425 is a deficient number, since it is larger than the sum of its proper divisors (168754629317).

213313435425 is a wasteful number, since it uses less digits than its factorization.

213313435425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948059729 (or 948059721 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 213313435425 its reverse (524534313312), we get a palindrome (737847748737).

The spelling of 213313435425 in words is "two hundred thirteen billion, three hundred thirteen million, four hundred thirty-five thousand, four hundred twenty-five".