20125056 has 64 divisors (see below), whose sum is σ = 61102080. Its totient is φ = 5749248.

The previous prime is 20125051. The next prime is 20125057. The reversal of 20125056 is 65052102.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125051) 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, 1056 + ... + 6431.

It is an arithmetic number, because the mean of its divisors is an integer number (954720).

Almost surely, 2^20125056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20125056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30551040).

20125056 is an abundant number, since it is smaller than the sum of its proper divisors (40977024).

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

20125056 is an equidigital number, since it uses as much as digits as its factorization.

20125056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511 (or 7499 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 20125056 is about 4486.0958527432. The cubic root of 20125056 is about 272.0063435660.

Adding to 20125056 its reverse (65052102), we get a palindrome (85177158).

The spelling of 20125056 in words is "twenty million, one hundred twenty-five thousand, fifty-six".