213403225 has 48 divisors (see below), whose sum is σ = 315535360. Its totient is φ = 140097600.

The previous prime is 213403217. The next prime is 213403243. The reversal of 213403225 is 522304312.

It is not a de Polignac number, because 213403225 - 2³ = 213403217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213403196 and 213403205.

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 in 47 ways as a sum of consecutive naturals, for example, 753934 + ... + 754216.

Almost surely, 2^213403225 is an apocalyptic number.

213403225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213403225 is a deficient number, since it is larger than the sum of its proper divisors (102132135).

213403225 is a wasteful number, since it uses less digits than its factorization.

213403225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 213403225 is about 14608.3272485251. The cubic root of 213403225 is about 597.5858784260.

Adding to 213403225 its reverse (522304312), we get a palindrome (735707537).

The spelling of 213403225 in words is "two hundred thirteen million, four hundred three thousand, two hundred twenty-five".