125766811 has 16 divisors (see below), whose sum is σ = 132803008. Its totient is φ = 118972800.

The previous prime is 125766791. The next prime is 125766887. The reversal of 125766811 is 118667521.

It is a cyclic number.

It is not a de Polignac number, because 125766811 - 2¹⁵ = 125734043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125266811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232201 + ... + 232741.

It is an arithmetic number, because the mean of its divisors is an integer number (8300188).

Almost surely, 2^125766811 is an apocalyptic number.

125766811 is a deficient number, since it is larger than the sum of its proper divisors (7036197).

125766811 is a wasteful number, since it uses less digits than its factorization.

125766811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its digits is 20160, while the sum is 37.

The square root of 125766811 is about 11214.5802863950. The cubic root of 125766811 is about 501.0203310992.

The spelling of 125766811 in words is "one hundred twenty-five million, seven hundred sixty-six thousand, eight hundred eleven".