1125091680 has 96 divisors (see below), whose sum is σ = 3658411008. Its totient is φ = 290342400.

The previous prime is 1125091607. The next prime is 1125091691. The reversal of 1125091680 is 861905211.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22926 + ... + 52685.

It is an arithmetic number, because the mean of its divisors is an integer number (38108448).

Almost surely, 2^1125091680 is an apocalyptic number.

1125091680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125091680 is an abundant number, since it is smaller than the sum of its proper divisors (2533319328).

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

1125091680 is a wasteful number, since it uses less digits than its factorization.

1125091680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75660 (or 75652 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1125091680 is about 33542.3863194019. The cubic root of 1125091680 is about 1040.0701629193.

Adding to 1125091680 its reverse (861905211), we get a palindrome (1986996891).

The spelling of 1125091680 in words is "one billion, one hundred twenty-five million, ninety-one thousand, six hundred eighty".