125683566 has 16 divisors (see below), whose sum is σ = 252018000. Its totient is φ = 41786048.

The previous prime is 125683559. The next prime is 125683577. The reversal of 125683566 is 665386521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24591 + ... + 29258.

It is an arithmetic number, because the mean of its divisors is an integer number (15751125).

Almost surely, 2^125683566 is an apocalyptic number.

125683566 is an abundant number, since it is smaller than the sum of its proper divisors (126334434).

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

125683566 is a wasteful number, since it uses less digits than its factorization.

125683566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54243.

The product of its digits is 259200, while the sum is 42.

The square root of 125683566 is about 11210.8682090193. The cubic root of 125683566 is about 500.9097649847.

The spelling of 125683566 in words is "one hundred twenty-five million, six hundred eighty-three thousand, five hundred sixty-six".