1166725656 has 24 divisors (see below), whose sum is σ = 3159882180. Its totient is φ = 388908528.

The previous prime is 1166725633. The next prime is 1166725661. The reversal of 1166725656 is 6565276611.

1166725656 is a `hidden beast` number, since 1 + 16 + 6 + 72 + 565 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1166725656² = 2722497512737260672, 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 5 ways as a sum of consecutive naturals, for example, 8102190 + ... + 8102333.

Almost surely, 2^1166725656 is an apocalyptic number.

It is an amenable number.

1166725656 is an abundant number, since it is smaller than the sum of its proper divisors (1993156524).

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

1166725656 is a wasteful number, since it uses less digits than its factorization.

1166725656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16204535 (or 16204528 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 1166725656 is about 34157.3660577042. The cubic root of 1166725656 is about 1052.7443420647.

The spelling of 1166725656 in words is "one billion, one hundred sixty-six million, seven hundred twenty-five thousand, six hundred fifty-six".