212456683625 has 8 divisors (see below), whose sum is σ = 265145941320. Its totient is φ = 169965346800.

The previous prime is 212456683619. The next prime is 212456683639. The reversal of 212456683625 is 526386654212.

It can be written as a sum of positive squares in 4 ways, for example, as 7059192361 + 205397491264 = 84019^2 + 453208^2 .

It is not a de Polignac number, because 212456683625 - 2¹⁶ = 212456618089 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849826610 + ... + 849826859.

It is an arithmetic number, because the mean of its divisors is an integer number (33143242665).

Almost surely, 2^212456683625 is an apocalyptic number.

212456683625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212456683625 is a deficient number, since it is larger than the sum of its proper divisors (52689257695).

212456683625 is an equidigital number, since it uses as much as digits as its factorization.

212456683625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699653484 (or 1699653474 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 50.

The spelling of 212456683625 in words is "two hundred twelve billion, four hundred fifty-six million, six hundred eighty-three thousand, six hundred twenty-five".