125666207 has 4 divisors (see below), whose sum is σ = 125810376. Its totient is φ = 125522040.

The previous prime is 125666201. The next prime is 125666221. The reversal of 125666207 is 702666521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125666207 - 2⁶ = 125666143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125666201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70769 + ... + 72522.

It is an arithmetic number, because the mean of its divisors is an integer number (31452594).

Almost surely, 2^125666207 is an apocalyptic number.

125666207 is a deficient number, since it is larger than the sum of its proper divisors (144169).

125666207 is an equidigital number, since it uses as much as digits as its factorization.

125666207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144168.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 125666207 is about 11210.0939781966. The cubic root of 125666207 is about 500.8867025875.

The spelling of 125666207 in words is "one hundred twenty-five million, six hundred sixty-six thousand, two hundred seven".