125503111 has 16 divisors (see below), whose sum is σ = 135311616. Its totient is φ = 116113536.

The previous prime is 125503093. The next prime is 125503121. The reversal of 125503111 is 111305521.

It is a cyclic number.

It is not a de Polignac number, because 125503111 - 2²¹ = 123405959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125503121) 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, 111196 + ... + 112318.

It is an arithmetic number, because the mean of its divisors is an integer number (8456976).

Almost surely, 2^125503111 is an apocalyptic number.

125503111 is a deficient number, since it is larger than the sum of its proper divisors (9808505).

125503111 is a wasteful number, since it uses less digits than its factorization.

125503111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 125503111 is about 11202.8171010688. The cubic root of 125503111 is about 500.6699166891.

Adding to 125503111 its reverse (111305521), we get a palindrome (236808632).

The spelling of 125503111 in words is "one hundred twenty-five million, five hundred three thousand, one hundred eleven".