125556101 has 16 divisors (see below), whose sum is σ = 145385280. Its totient is φ = 107162880.

The previous prime is 125556097. The next prime is 125556113. The reversal of 125556101 is 101655521.

It is not a de Polignac number, because 125556101 - 2² = 125556097 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 (125556401) 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 15 ways as a sum of consecutive naturals, for example, 132110 + ... + 133056.

It is an arithmetic number, because the mean of its divisors is an integer number (9086580).

Almost surely, 2^125556101 is an apocalyptic number.

125556101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125556101 is a deficient number, since it is larger than the sum of its proper divisors (19829179).

125556101 is a wasteful number, since it uses less digits than its factorization.

125556101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 125556101 is about 11205.1818816117. The cubic root of 125556101 is about 500.7403711600.

The spelling of 125556101 in words is "one hundred twenty-five million, five hundred fifty-six thousand, one hundred one".