252543221204 has 6 divisors (see below), whose sum is σ = 441950637114. Its totient is φ = 126271610600.

The previous prime is 252543221197. The next prime is 252543221237. The reversal of 252543221204 is 402122345252.

It can be written as a sum of positive squares in only one way, i.e., 189049300804 + 63493920400 = 434798^2 + 251980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31567902647 + ... + 31567902654.

It is an arithmetic number, because the mean of its divisors is an integer number (73658439519).

Almost surely, 2^252543221204 is an apocalyptic number.

It is an amenable number.

252543221204 is a deficient number, since it is larger than the sum of its proper divisors (189407415910).

252543221204 is a wasteful number, since it uses less digits than its factorization.

252543221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63135805305 (or 63135805303 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 252543221204 its reverse (402122345252), we get a palindrome (654665566456).

The spelling of 252543221204 in words is "two hundred fifty-two billion, five hundred forty-three million, two hundred twenty-one thousand, two hundred four".