125125003 has 4 divisors (see below), whose sum is σ = 125167680. Its totient is φ = 125082328.

The previous prime is 125125001. The next prime is 125125027. The reversal of 125125003 is 300521521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300521521 = 1531 ⋅196291.

It is a cyclic number.

It is not a de Polignac number, because 125125003 - 2¹ = 125125001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125125001) 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, 16588 + ... + 22921.

It is an arithmetic number, because the mean of its divisors is an integer number (31291920).

Almost surely, 2^125125003 is an apocalyptic number.

125125003 is a deficient number, since it is larger than the sum of its proper divisors (42677).

125125003 is an equidigital number, since it uses as much as digits as its factorization.

125125003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42676.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 125125003 is about 11185.9287946956. The cubic root of 125125003 is about 500.1666151393.

Adding to 125125003 its reverse (300521521), we get a palindrome (425646524).

It can be divided in two parts, 12512500 and 3, that added together give a triangular number (12512503 = T₅₀₀₂).

The spelling of 125125003 in words is "one hundred twenty-five million, one hundred twenty-five thousand, three".