1125900720 has 240 divisors, whose sum is σ = 4357816320. Its totient is φ = 255177216.

The previous prime is 1125900719. The next prime is 1125900733. The reversal of 1125900720 is 270095211.

1125900720 is a `hidden beast` number, since 1 + 1 + 2 + 590 + 0 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 639201 + ... + 640959.

It is an arithmetic number, because the mean of its divisors is an integer number (18157568).

Almost surely, 2^1125900720 is an apocalyptic number.

1125900720 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 1125900720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2178908160).

1125900720 is an abundant number, since it is smaller than the sum of its proper divisors (3231915600).

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

1125900720 is a wasteful number, since it uses less digits than its factorization.

1125900720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1125900720 is about 33554.4441169869. Note that the first 3 decimals coincide. The cubic root of 1125900720 is about 1040.3194038673.

Adding to 1125900720 its reverse (270095211), we get a palindrome (1395995931).

The spelling of 1125900720 in words is "one billion, one hundred twenty-five million, nine hundred thousand, seven hundred twenty".