1125477900 has 108 divisors (see below), whose sum is σ = 3539971344. Its totient is φ = 299088000.

The previous prime is 1125477833. The next prime is 1125477917. The reversal of 1125477900 is 97745211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 277890 + ... + 281910.

Almost surely, 2^1125477900 is an apocalyptic number.

1125477900 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 1125477900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1769985672).

1125477900 is an abundant number, since it is smaller than the sum of its proper divisors (2414493444).

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

1125477900 is a wasteful number, since it uses less digits than its factorization.

1125477900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352 (or 4342 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 1125477900 is about 33548.1430186531. The cubic root of 1125477900 is about 1040.1891606121.

The spelling of 1125477900 in words is "one billion, one hundred twenty-five million, four hundred seventy-seven thousand, nine hundred".