125851663 has 8 divisors (see below), whose sum is σ = 152291232. Its totient is φ = 101527296.

The previous prime is 125851643. The next prime is 125851679. The reversal of 125851663 is 366158521.

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

It is a cyclic number.

It is not a de Polignac number, because 125851663 - 2⁵ = 125851631 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 (125851613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528670 + ... + 528907.

It is an arithmetic number, because the mean of its divisors is an integer number (19036404).

Almost surely, 2^125851663 is an apocalyptic number.

125851663 is a deficient number, since it is larger than the sum of its proper divisors (26439569).

125851663 is a wasteful number, since it uses less digits than its factorization.

125851663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057601.

The product of its digits is 43200, while the sum is 37.

The square root of 125851663 is about 11218.3627593335. The cubic root of 125851663 is about 501.1329814337.

The spelling of 125851663 in words is "one hundred twenty-five million, eight hundred fifty-one thousand, six hundred sixty-three".