250115305500 has 288 divisors, whose sum is σ = 825385421952. Its totient is φ = 63638784000.

The previous prime is 250115305499. The next prime is 250115305513. The reversal of 250115305500 is 5503511052.

250115305500 is a `hidden beast` number, since 2 + 5 + 0 + 1 + 153 + 0 + 5 + 500 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44812710 + ... + 44818290.

It is an arithmetic number, because the mean of its divisors is an integer number (2865921604).

Almost surely, 2^250115305500 is an apocalyptic number.

250115305500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250115305500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412692710976).

250115305500 is an abundant number, since it is smaller than the sum of its proper divisors (575270116452).

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

250115305500 is a wasteful number, since it uses less digits than its factorization.

250115305500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062 (or 6047 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

Adding to 250115305500 its reverse (5503511052), we get a palindrome (255618816552).

The spelling of 250115305500 in words is "two hundred fifty billion, one hundred fifteen million, three hundred five thousand, five hundred".