125620111 has 4 divisors (see below), whose sum is σ = 125819824. Its totient is φ = 125420400.

The previous prime is 125620093. The next prime is 125620129. The reversal of 125620111 is 111026521.

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

It is an interprime number because it is at equal distance from previous prime (125620093) and next prime (125620129).

It is a cyclic number.

It is not a de Polignac number, because 125620111 - 2⁷ = 125619983 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 (125620171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98910 + ... + 100171.

It is an arithmetic number, because the mean of its divisors is an integer number (31454956).

It is the magic constant of a 631 × 631 magic square.

Almost surely, 2^125620111 is an apocalyptic number.

125620111 is a deficient number, since it is larger than the sum of its proper divisors (199713).

125620111 is an equidigital number, since it uses as much as digits as its factorization.

125620111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199712.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 125620111 is about 11208.0377854467. The cubic root of 125620111 is about 500.8254511775.

Adding to 125620111 its reverse (111026521), we get a palindrome (236646632).

The spelling of 125620111 in words is "one hundred twenty-five million, six hundred twenty thousand, one hundred eleven".