213412225 has 24 divisors (see below), whose sum is σ = 291634112. Its totient is φ = 153921600.

The previous prime is 213412211. The next prime is 213412261. The reversal of 213412225 is 522214312.

It is a happy number.

It is not a de Polignac number, because 213412225 - 2⁹ = 213411713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213412196 and 213412205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6340 + ... + 21610.

Almost surely, 2^213412225 is an apocalyptic number.

213412225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213412225 is a deficient number, since it is larger than the sum of its proper divisors (78221887).

213412225 is a wasteful number, since it uses less digits than its factorization.

213412225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15337 (or 15332 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 213412225 is about 14608.6352887599. The cubic root of 213412225 is about 597.5942791071.

Adding to 213412225 its reverse (522214312), we get a palindrome (735626537).

The spelling of 213412225 in words is "two hundred thirteen million, four hundred twelve thousand, two hundred twenty-five".