212543055525 has 48 divisors (see below), whose sum is σ = 354467812608. Its totient is φ = 112372128000.

The previous prime is 212543055521. The next prime is 212543055539. The reversal of 212543055525 is 525550345212.

It is not a de Polignac number, because 212543055525 - 2² = 212543055521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212543055521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4278580 + ... + 4327970.

It is an arithmetic number, because the mean of its divisors is an integer number (7384746096).

Almost surely, 2^212543055525 is an apocalyptic number.

212543055525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212543055525 is a deficient number, since it is larger than the sum of its proper divisors (141924757083).

212543055525 is a wasteful number, since it uses less digits than its factorization.

212543055525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49902 (or 49897 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 39.

The spelling of 212543055525 in words is "two hundred twelve billion, five hundred forty-three million, fifty-five thousand, five hundred twenty-five".