212725664 has 48 divisors (see below), whose sum is σ = 427903560. Its totient is φ = 104079360.

The previous prime is 212725663. The next prime is 212725673. The reversal of 212725664 is 466527212.

It can be written as a sum of positive squares in 4 ways, for example, as 118635664 + 94090000 = 10892^2 + 9700^2 .

It is not an unprimeable number, because it can be changed into a prime (212725663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321494 + ... + 322154.

Almost surely, 2^212725664 is an apocalyptic number.

It is an amenable number.

212725664 is an abundant number, since it is smaller than the sum of its proper divisors (215177896).

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

212725664 is a wasteful number, since it uses less digits than its factorization.

212725664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 865 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 212725664 is about 14585.1178946212. The cubic root of 212725664 is about 596.9527574620.

The spelling of 212725664 in words is "two hundred twelve million, seven hundred twenty-five thousand, six hundred sixty-four".