250255215321220 has 24 divisors (see below), whose sum is σ = 525537165795264. Its totient is φ = 100101854962656.

The previous prime is 250255215321193. The next prime is 250255215321257. The reversal of 250255215321220 is 22123512552052.

It is a self number, because there is not a number n which added to its sum of digits gives 250255215321220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5433544 + ... + 23022463.

It is an arithmetic number, because the mean of its divisors is an integer number (21897381908136).

Almost surely, 2^{250255215321220} is an apocalyptic number.

250255215321220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250255215321220 is an abundant number, since it is smaller than the sum of its proper divisors (275281950474044).

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

250255215321220 is a wasteful number, since it uses less digits than its factorization.

250255215321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28895739 (or 28895737 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 250255215321220 its reverse (22123512552052), we get a palindrome (272378727873272).

The spelling of 250255215321220 in words is "two hundred fifty trillion, two hundred fifty-five billion, two hundred fifteen million, three hundred twenty-one thousand, two hundred twenty".