1125375552 has 168 divisors, whose sum is σ = 3848831520. Its totient is φ = 321511680.

The previous prime is 1125375551. The next prime is 1125375569. The reversal of 1125375552 is 2555735211.

1125375552 is a `hidden beast` number, since 11 + 25 + 3 + 75 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1125375551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78027 + ... + 91317.

Almost surely, 2^1125375552 is an apocalyptic number.

1125375552 is a gapful number since it is divisible by the number (12) 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 1125375552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924415760).

1125375552 is an abundant number, since it is smaller than the sum of its proper divisors (2723455968).

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

1125375552 is a wasteful number, since it uses less digits than its factorization.

1125375552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13326 (or 13303 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 1125375552 is about 33546.6175940288. The cubic root of 1125375552 is about 1040.1576289675.

The spelling of 1125375552 in words is "one billion, one hundred twenty-five million, three hundred seventy-five thousand, five hundred fifty-two".