125503005 has 16 divisors (see below), whose sum is σ = 202011264. Its totient is φ = 66532800.

The previous prime is 125503003. The next prime is 125503013. The reversal of 125503005 is 500305521.

It is not a de Polignac number, because 125503005 - 2¹ = 125503003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125503003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22546 + ... + 27555.

It is an arithmetic number, because the mean of its divisors is an integer number (12625704).

Almost surely, 2^125503005 is an apocalyptic number.

125503005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125503005 is a deficient number, since it is larger than the sum of its proper divisors (76508259).

125503005 is a wasteful number, since it uses less digits than its factorization.

125503005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50276.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 125503005 is about 11202.8123701149. The cubic root of 125503005 is about 500.6697757337.

Adding to 125503005 its reverse (500305521), we get a palindrome (625808526).

The spelling of 125503005 in words is "one hundred twenty-five million, five hundred three thousand, five".