125503003 has 2 divisors, whose sum is σ = 125503004. Its totient is φ = 125503002.

The previous prime is 125502997. The next prime is 125503013. The reversal of 125503003 is 300305521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125503003 - 2¹⁷ = 125371931 is a prime.

It is not a weakly prime, because it can be changed into another prime (125503013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62751501 + 62751502.

It is an arithmetic number, because the mean of its divisors is an integer number (62751502).

Almost surely, 2^125503003 is an apocalyptic number.

125503003 is a deficient number, since it is larger than the sum of its proper divisors (1).

125503003 is an equidigital number, since it uses as much as digits as its factorization.

125503003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 125503003 is about 11202.8122808516. The cubic root of 125503003 is about 500.6697730741.

Adding to 125503003 its reverse (300305521), we get a palindrome (425808524).

The spelling of 125503003 in words is "one hundred twenty-five million, five hundred three thousand, three".