1125224550 has 72 divisors (see below), whose sum is σ = 3036930624. Its totient is φ = 298687680.

The previous prime is 1125224531. The next prime is 1125224567. The reversal of 1125224550 is 554225211.

It is a super-2 number, since 2×1125224550² = 2532260575845405000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 94744 + ... + 105956.

It is an arithmetic number, because the mean of its divisors is an integer number (42179592).

Almost surely, 2^1125224550 is an apocalyptic number.

1125224550 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 1125224550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518465312).

1125224550 is an abundant number, since it is smaller than the sum of its proper divisors (1911706074).

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

1125224550 is a wasteful number, since it uses less digits than its factorization.

1125224550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454 (or 11446 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1125224550 is about 33544.3668892409. The cubic root of 1125224550 is about 1040.1111043777. Note that the first 4 decimals are identical.

Adding to 1125224550 its reverse (554225211), we get a palindrome (1679449761).

The spelling of 1125224550 in words is "one billion, one hundred twenty-five million, two hundred twenty-four thousand, five hundred fifty".