125054503 has 4 divisors (see below), whose sum is σ = 142919440. Its totient is φ = 107189568.

The previous prime is 125054497. The next prime is 125054513. The reversal of 125054503 is 305450521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305450521 = 67 ⋅4558963.

It is a cyclic number.

It is not a de Polignac number, because 125054503 - 2¹⁷ = 124923431 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125054513) 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, 8932458 + ... + 8932471.

It is an arithmetic number, because the mean of its divisors is an integer number (35729860).

Almost surely, 2^125054503 is an apocalyptic number.

125054503 is a deficient number, since it is larger than the sum of its proper divisors (17864937).

125054503 is an equidigital number, since it uses as much as digits as its factorization.

125054503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17864936.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 125054503 is about 11182.7770701199. Note that the first 3 decimals coincide. The cubic root of 125054503 is about 500.0726601072.

The spelling of 125054503 in words is "one hundred twenty-five million, fifty-four thousand, five hundred three".