1125120810 has 64 divisors (see below), whose sum is σ = 2975025024. Its totient is φ = 270048000.

The previous prime is 1125120793. The next prime is 1125120833. The reversal of 1125120810 is 180215211.

It is a super-2 number, since 2×1125120810² = 2531793674190112200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16452 + ... + 50208.

It is an arithmetic number, because the mean of its divisors is an integer number (46484766).

Almost surely, 2^1125120810 is an apocalyptic number.

1125120810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125120810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1487512512).

1125120810 is an abundant number, since it is smaller than the sum of its proper divisors (1849904214).

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

1125120810 is a wasteful number, since it uses less digits than its factorization.

1125120810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33879.

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 1125120810 is about 33542.8205432996. The cubic root of 1125120810 is about 1040.0791390714.

The spelling of 1125120810 in words is "one billion, one hundred twenty-five million, one hundred twenty thousand, eight hundred ten".