125356666 has 16 divisors (see below), whose sum is σ = 193665024. Its totient is φ = 60811344.

The previous prime is 125356631. The next prime is 125356669. The reversal of 125356666 is 666653521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (125356669) 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, 26131 + ... + 30553.

It is an arithmetic number, because the mean of its divisors is an integer number (12104064).

Almost surely, 2^125356666 is an apocalyptic number.

125356666 is a deficient number, since it is larger than the sum of its proper divisors (68308358).

125356666 is a wasteful number, since it uses less digits than its factorization.

125356666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4845.

The product of its digits is 194400, while the sum is 40.

The square root of 125356666 is about 11196.2791140629. The cubic root of 125356666 is about 500.4751030778.

The spelling of 125356666 in words is "one hundred twenty-five million, three hundred fifty-six thousand, six hundred sixty-six".