1125331400 has 24 divisors (see below), whose sum is σ = 2616395970. Its totient is φ = 450132480.

The previous prime is 1125331391. The next prime is 1125331421. The reversal of 1125331400 is 41335211.

It can be written as a sum of positive squares in 3 ways, for example, as 705327364 + 420004036 = 26558^2 + 20494^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2813129 + ... + 2813528.

Almost surely, 2^1125331400 is an apocalyptic number.

1125331400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125331400 is an abundant number, since it is smaller than the sum of its proper divisors (1491064570).

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

1125331400 is a wasteful number, since it uses less digits than its factorization.

1125331400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626673 (or 5626664 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1125331400 is about 33545.9595182490. The cubic root of 1125331400 is about 1040.1440259114.

Adding to 1125331400 its reverse (41335211), we get a palindrome (1166666611).

The spelling of 1125331400 in words is "one billion, one hundred twenty-five million, three hundred thirty-one thousand, four hundred".