1166670725 has 24 divisors (see below), whose sum is σ = 1632618720. Its totient is φ = 819224000.

The previous prime is 1166670721. The next prime is 1166670727. The reversal of 1166670725 is 5270766611.

It is not a de Polignac number, because 1166670725 - 2² = 1166670721 is a prime.

It is a super-2 number, since 2×1166670725² = 2722241161144051250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166670721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65171 + ... + 81120.

It is an arithmetic number, because the mean of its divisors is an integer number (68025780).

Almost surely, 2^1166670725 is an apocalyptic number.

It is an amenable number.

1166670725 is a deficient number, since it is larger than the sum of its proper divisors (465947995).

1166670725 is a wasteful number, since it uses less digits than its factorization.

1166670725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146341 (or 146336 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1166670725 is about 34156.5619610639. The cubic root of 1166670725 is about 1052.7278202695.

The spelling of 1166670725 in words is "one billion, one hundred sixty-six million, six hundred seventy thousand, seven hundred twenty-five".