7125666 has 16 divisors (see below), whose sum is σ = 14493600. Its totient is φ = 2334848.

The previous prime is 7125661. The next prime is 7125673. The reversal of 7125666 is 6665217.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7125661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9711 + ... + 10418.

It is an arithmetic number, because the mean of its divisors is an integer number (905850).

Almost surely, 2^7125666 is an apocalyptic number.

7125666 is an abundant number, since it is smaller than the sum of its proper divisors (7367934).

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

7125666 is a wasteful number, since it uses less digits than its factorization.

7125666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20193.

The product of its digits is 15120, while the sum is 33.

The square root of 7125666 is about 2669.3943133228. The cubic root of 7125666 is about 192.4310519367.

The spelling of 7125666 in words is "seven million, one hundred twenty-five thousand, six hundred sixty-six".