252220000442 has 4 divisors (see below), whose sum is σ = 378330000666. Its totient is φ = 126110000220.

The previous prime is 252220000433. The next prime is 252220000447. The reversal of 252220000442 is 244000022252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143300859601 + 108919140841 = 378551^2 + 330029^2 .

It is a super-2 number, since 2×252220000442² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252220000447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63055000109 + ... + 63055000112.

Almost surely, 2^252220000442 is an apocalyptic number.

252220000442 is a deficient number, since it is larger than the sum of its proper divisors (126110000224).

252220000442 is a wasteful number, since it uses less digits than its factorization.

252220000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126110000223.

The product of its (nonzero) digits is 2560, while the sum is 23.

Adding to 252220000442 its reverse (244000022252), we get a palindrome (496220022694).

The spelling of 252220000442 in words is "two hundred fifty-two billion, two hundred twenty million, four hundred forty-two", and thus it is an aban number.