1125720481599 has 48 divisors (see below), whose sum is σ = 1861782773760. Its totient is φ = 642075396480.

The previous prime is 1125720481579. The next prime is 1125720481607. The reversal of 1125720481599 is 9951840275211.

1125720481599 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 7 + 2 + 0 + 48 + 1 + 599 = 666.

It is not a de Polignac number, because 1125720481599 - 2⁷ = 1125720481471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125720481579) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 107339134 + ... + 107349620.

It is an arithmetic number, because the mean of its divisors is an integer number (38787141120).

Almost surely, 2^{1125720481599} is an apocalyptic number.

1125720481599 is a deficient number, since it is larger than the sum of its proper divisors (736062292161).

1125720481599 is a wasteful number, since it uses less digits than its factorization.

1125720481599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13500 (or 13497 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The spelling of 1125720481599 in words is "one trillion, one hundred twenty-five billion, seven hundred twenty million, four hundred eighty-one thousand, five hundred ninety-nine".