125711056 has 40 divisors (see below), whose sum is σ = 266802120. Its totient is φ = 57114624.

The previous prime is 125711051. The next prime is 125711081. The reversal of 125711056 is 650117521.

It can be written as a sum of positive squares in 4 ways, for example, as 46785600 + 78925456 = 6840^2 + 8884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125711051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81 + ... + 15856.

It is an arithmetic number, because the mean of its divisors is an integer number (6670053).

Almost surely, 2^125711056 is an apocalyptic number.

125711056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125711056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133401060).

125711056 is an abundant number, since it is smaller than the sum of its proper divisors (141091064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125711056 is a wasteful number, since it uses less digits than its factorization.

125711056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15991 (or 15985 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 125711056 is about 11212.0941844064. The cubic root of 125711056 is about 500.9462826352.

Adding to 125711056 its reverse (650117521), we get a palindrome (775828577).

The spelling of 125711056 in words is "one hundred twenty-five million, seven hundred eleven thousand, fifty-six".