213226525 has 12 divisors (see below), whose sum is σ = 272930944. Its totient is φ = 165078000.

The previous prime is 213226513. The next prime is 213226549. The reversal of 213226525 is 525622312.

213226525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213226525 - 2⁷ = 213226397 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 213226493 and 213226502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136791 + ... + 138340.

Almost surely, 2^213226525 is an apocalyptic number.

213226525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213226525 is a deficient number, since it is larger than the sum of its proper divisors (59704419).

213226525 is a wasteful number, since it uses less digits than its factorization.

213226525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275172 (or 275167 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 213226525 is about 14602.2780756976. The cubic root of 213226525 is about 597.4208971919.

Adding to 213226525 its reverse (525622312), we get a palindrome (738848837).

The spelling of 213226525 in words is "two hundred thirteen million, two hundred twenty-six thousand, five hundred twenty-five".