1125481500 has 576 divisors, whose sum is σ = 4391936640. Its totient is φ = 247104000.

The previous prime is 1125481499. The next prime is 1125481501. The reversal of 1125481500 is 51845211.

1125481500 is a `hidden beast` number, since 112 + 5 + 48 + 1 + 500 = 666.

It is an interprime number because it is at equal distance from previous prime (1125481499) and next prime (1125481501).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125481501) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 21235474 + ... + 21235526.

It is an arithmetic number, because the mean of its divisors is an integer number (7624890).

Almost surely, 2^1125481500 is an apocalyptic number.

1125481500 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 1125481500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2195968320).

1125481500 is an abundant number, since it is smaller than the sum of its proper divisors (3266455140).

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

1125481500 is a wasteful number, since it uses less digits than its factorization.

1125481500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 1125481500 is about 33548.1966728467. The cubic root of 1125481500 is about 1040.1902696749.

The spelling of 1125481500 in words is "one billion, one hundred twenty-five million, four hundred eighty-one thousand, five hundred".