1125661222 has 48 divisors (see below), whose sum is σ = 2085086448. Its totient is φ = 452874240.

The previous prime is 1125661183. The next prime is 1125661253. The reversal of 1125661222 is 2221665211.

It is a super-2 number, since 2×1125661222² = 2534226373429066568, which contains 22 as substring.

It is a congruent number.

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, 960697 + ... + 961867.

It is an arithmetic number, because the mean of its divisors is an integer number (43439301).

Almost surely, 2^1125661222 is an apocalyptic number.

1125661222 is a deficient number, since it is larger than the sum of its proper divisors (959425226).

1125661222 is a wasteful number, since it uses less digits than its factorization.

1125661222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781 (or 1774 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 1125661222 is about 33550.8751301661. The cubic root of 1125661222 is about 1040.2456341643.

The spelling of 1125661222 in words is "one billion, one hundred twenty-five million, six hundred sixty-one thousand, two hundred twenty-two".