505025221153242 has 32 divisors (see below), whose sum is σ = 1010490574579200. Its totient is φ = 168268400518320.

The previous prime is 505025221153177. The next prime is 505025221153249. The reversal of 505025221153242 is 242351122520505.

It is a super-2 number, since 2×505025221153242² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505025221153242.

It is not an unprimeable number, because it can be changed into a prime (505025221153249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128607009 + ... + 132475707.

It is an arithmetic number, because the mean of its divisors is an integer number (31577830455600).

Almost surely, 2^{505025221153242} is an apocalyptic number.

505025221153242 is an abundant number, since it is smaller than the sum of its proper divisors (505465353425958).

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

505025221153242 is a wasteful number, since it uses less digits than its factorization.

505025221153242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878178.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 505025221153242 its reverse (242351122520505), we get a palindrome (747376343673747).

The spelling of 505025221153242 in words is "five hundred five trillion, twenty-five billion, two hundred twenty-one million, one hundred fifty-three thousand, two hundred forty-two".