1125726666 has 16 divisors (see below), whose sum is σ = 2251821600. Its totient is φ = 375180848.

The previous prime is 1125726647. The next prime is 1125726677. The reversal of 1125726666 is 6666275211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39445 + ... + 61703.

It is an arithmetic number, because the mean of its divisors is an integer number (140738850).

Almost surely, 2^1125726666 is an apocalyptic number.

1125726666 is an abundant number, since it is smaller than the sum of its proper divisors (1126094934).

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

1125726666 is a wasteful number, since it uses less digits than its factorization.

1125726666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30693.

The product of its digits is 181440, while the sum is 42.

The square root of 1125726666 is about 33551.8504109684. The cubic root of 1125726666 is about 1040.2657931354.

The spelling of 1125726666 in words is "one billion, one hundred twenty-five million, seven hundred twenty-six thousand, six hundred sixty-six".