1125011400 has 96 divisors (see below), whose sum is σ = 3499329600. Its totient is φ = 298988800.

The previous prime is 1125011387. The next prime is 1125011453. The reversal of 1125011400 is 41105211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1125011400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183586 + ... + 189614.

It is an arithmetic number, because the mean of its divisors is an integer number (36451350).

Almost surely, 2^1125011400 is an apocalyptic number.

1125011400 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 1125011400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749664800).

1125011400 is an abundant number, since it is smaller than the sum of its proper divisors (2374318200).

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

1125011400 is a wasteful number, since it uses less digits than its factorization.

1125011400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359 (or 6350 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1125011400 is about 33541.1896032326. The cubic root of 1125011400 is about 1040.0454245445.

Adding to 1125011400 its reverse (41105211), we get a palindrome (1166116611).

The spelling of 1125011400 in words is "one billion, one hundred twenty-five million, eleven thousand, four hundred".