1125720481600 has 672 divisors, whose sum is σ = 3454178918400. Its totient is φ = 354983731200.

The previous prime is 1125720481579. The next prime is 1125720481607. The reversal of 1125720481600 is 61840275211.

It is a self number, because there is not a number n which added to its sum of digits gives 1125720481600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125720481607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 552093381 + ... + 552095419.

It is an arithmetic number, because the mean of its divisors is an integer number (5140147200).

Almost surely, 2^{1125720481600} is an apocalyptic number.

1125720481600 is a gapful number since it is divisible by the number (10) 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 1125720481600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727089459200).

1125720481600 is an abundant number, since it is smaller than the sum of its proper divisors (2328458436800).

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

1125720481600 is a wasteful number, since it uses less digits than its factorization.

1125720481600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 1125720481600 in words is "one trillion, one hundred twenty-five billion, seven hundred twenty million, four hundred eighty-one thousand, six hundred".