213525256 has 16 divisors (see below), whose sum is σ = 457554240. Its totient is φ = 91510800.

The previous prime is 213525251. The next prime is 213525269. The reversal of 213525256 is 652525312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213525251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906420 + ... + 1906531.

It is an arithmetic number, because the mean of its divisors is an integer number (28597140).

Almost surely, 2^213525256 is an apocalyptic number.

It is an amenable number.

213525256 is an abundant number, since it is smaller than the sum of its proper divisors (244028984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213525256 is a wasteful number, since it uses less digits than its factorization.

213525256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812964 (or 3812960 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 213525256 is about 14612.5034131733. The cubic root of 213525256 is about 597.6997631570.

The spelling of 213525256 in words is "two hundred thirteen million, five hundred twenty-five thousand, two hundred fifty-six".