125603501 has 2 divisors, whose sum is σ = 125603502. Its totient is φ = 125603500.

The previous prime is 125603477. The next prime is 125603519. The reversal of 125603501 is 105306521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102313225 + 23290276 = 10115^2 + 4826^2 .

It is a cyclic number.

It is not a de Polignac number, because 125603501 - 2¹⁴ = 125587117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125603521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62801750 + 62801751.

It is an arithmetic number, because the mean of its divisors is an integer number (62801751).

Almost surely, 2^125603501 is an apocalyptic number.

It is an amenable number.

125603501 is a deficient number, since it is larger than the sum of its proper divisors (1).

125603501 is an equidigital number, since it uses as much as digits as its factorization.

125603501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 125603501 is about 11207.2967748695. The cubic root of 125603501 is about 500.8033764811.

It can be divided in two parts, 12560 and 3501, that added together give a palindrome (16061).

The spelling of 125603501 in words is "one hundred twenty-five million, six hundred three thousand, five hundred one".