125404111 has 4 divisors (see below), whose sum is σ = 143318992. Its totient is φ = 107489232.

The previous prime is 125404061. The next prime is 125404127. The reversal of 125404111 is 111404521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125404111 - 2⁹ = 125403599 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 (125408111) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8957430 + ... + 8957443.

It is an arithmetic number, because the mean of its divisors is an integer number (35829748).

Almost surely, 2^125404111 is an apocalyptic number.

125404111 is a deficient number, since it is larger than the sum of its proper divisors (17914881).

125404111 is an equidigital number, since it uses as much as digits as its factorization.

125404111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17914880.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 125404111 is about 11198.3976978852. The cubic root of 125404111 is about 500.5382350648.

Adding to 125404111 its reverse (111404521), we get a palindrome (236808632).

The spelling of 125404111 in words is "one hundred twenty-five million, four hundred four thousand, one hundred eleven".