125511113 has 32 divisors (see below), whose sum is σ = 159371520. Its totient is φ = 96215040.

The previous prime is 125511097. The next prime is 125511121. The reversal of 125511113 is 311115521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125511113 - 2⁴ = 125511097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125511413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520673 + ... + 520913.

It is an arithmetic number, because the mean of its divisors is an integer number (4980360).

Almost surely, 2^125511113 is an apocalyptic number.

125511113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

125511113 is a deficient number, since it is larger than the sum of its proper divisors (33860407).

125511113 is a wasteful number, since it uses less digits than its factorization.

125511113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its digits is 150, while the sum is 20.

The square root of 125511113 is about 11203.1742376882. The cubic root of 125511113 is about 500.6805572633.

Adding to 125511113 its reverse (311115521), we get a palindrome (436626634).

The spelling of 125511113 in words is "one hundred twenty-five million, five hundred eleven thousand, one hundred thirteen".