125866003 has 4 divisors (see below), whose sum is σ = 130206240. Its totient is φ = 121525768.

The previous prime is 125865973. The next prime is 125866019. The reversal of 125866003 is 300668521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300668521 = 19 ⋅15824659.

It is a cyclic number.

It is not a de Polignac number, because 125866003 - 2¹³ = 125857811 is a prime.

It is a super-2 number, since 2×125866003² = 31684501422392018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125866093) 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, 2170075 + ... + 2170132.

It is an arithmetic number, because the mean of its divisors is an integer number (32551560).

Almost surely, 2^125866003 is an apocalyptic number.

125866003 is a deficient number, since it is larger than the sum of its proper divisors (4340237).

125866003 is an equidigital number, since it uses as much as digits as its factorization.

125866003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340236.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 125866003 is about 11219.0018718244. The cubic root of 125866003 is about 501.1520143540.

The spelling of 125866003 in words is "one hundred twenty-five million, eight hundred sixty-six thousand, three".