11552021250 has 240 divisors, whose sum is σ = 36277437504. Its totient is φ = 2399760000.

The previous prime is 11552021249. The next prime is 11552021281. The reversal of 11552021250 is 5212025511.

It is a self number, because there is not a number n which added to its sum of digits gives 11552021250.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3174432 + ... + 3178068.

Almost surely, 2^11552021250 is an apocalyptic number.

11552021250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11552021250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18138718752).

11552021250 is an abundant number, since it is smaller than the sum of its proper divisors (24725416254).

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

11552021250 is a wasteful number, since it uses less digits than its factorization.

11552021250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691 (or 3665 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

Adding to 11552021250 its reverse (5212025511), we get a palindrome (16764046761).

The spelling of 11552021250 in words is "eleven billion, five hundred fifty-two million, twenty-one thousand, two hundred fifty".