525243220212 has 24 divisors (see below), whose sum is σ = 1227473546656. Its totient is φ = 174808783008.

The previous prime is 525243220207. The next prime is 525243220213. The reversal of 525243220212 is 212022342525.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 525243220212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525243220213) 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, 34028263 + ... + 34043694.

Almost surely, 2^525243220212 is an apocalyptic number.

It is an amenable number.

525243220212 is an abundant number, since it is smaller than the sum of its proper divisors (702230326444).

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

525243220212 is a wasteful number, since it uses less digits than its factorization.

525243220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68072607 (or 68072605 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 525243220212 its reverse (212022342525), we get a palindrome (737265562737).

The spelling of 525243220212 in words is "five hundred twenty-five billion, two hundred forty-three million, two hundred twenty thousand, two hundred twelve".