125631966 has 8 divisors (see below), whose sum is σ = 251263944. Its totient is φ = 41877320.

The previous prime is 125631959. The next prime is 125631967. The reversal of 125631966 is 669136521.

It is a sphenic number, since it is the product of 3 distinct primes.

125631966 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125631967) 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, 10469325 + ... + 10469336.

It is an arithmetic number, because the mean of its divisors is an integer number (31407993).

Almost surely, 2^125631966 is an apocalyptic number.

125631966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

125631966 is a wasteful number, since it uses less digits than its factorization.

125631966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20938666.

The product of its digits is 58320, while the sum is 39.

The square root of 125631966 is about 11208.5666344988. The cubic root of 125631966 is about 500.8412052870.

The spelling of 125631966 in words is "one hundred twenty-five million, six hundred thirty-one thousand, nine hundred sixty-six".