213525412 has 6 divisors (see below), whose sum is σ = 373669478. Its totient is φ = 106762704.

The previous prime is 213525397. The next prime is 213525461. The reversal of 213525412 is 214525312.

It can be written as a sum of positive squares in only one way, i.e., 174662656 + 38862756 = 13216^2 + 6234^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26690673 + ... + 26690680.

Almost surely, 2^213525412 is an apocalyptic number.

It is an amenable number.

213525412 is a deficient number, since it is larger than the sum of its proper divisors (160144066).

213525412 is a wasteful number, since it uses less digits than its factorization.

213525412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53381357 (or 53381355 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 213525412 is about 14612.5087510667. The cubic root of 213525412 is about 597.6999087154.

It can be divided in two parts, 213 and 525412, that added together give a square (525625 = 725²).

The spelling of 213525412 in words is "two hundred thirteen million, five hundred twenty-five thousand, four hundred twelve".