1125455212 has 24 divisors (see below), whose sum is σ = 2293383456. Its totient is φ = 473236608.

The previous prime is 1125455143. The next prime is 1125455239. The reversal of 1125455212 is 2125545211.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 7 ways as a sum of consecutive naturals, for example, 377713 + ... + 380680.

It is an arithmetic number, because the mean of its divisors is an integer number (95557644).

Almost surely, 2^1125455212 is an apocalyptic number.

It is an amenable number.

1125455212 is an abundant number, since it is smaller than the sum of its proper divisors (1167928244).

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

1125455212 is a wasteful number, since it uses less digits than its factorization.

1125455212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758457 (or 758455 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 1125455212 is about 33547.8048760273. The cubic root of 1125455212 is about 1040.1821709975.

It can be divided in two parts, 11254 and 55212, that added together give a palindrome (66466).

The spelling of 1125455212 in words is "one billion, one hundred twenty-five million, four hundred fifty-five thousand, two hundred twelve".