646262125 has 16 divisors (see below), whose sum is σ = 821761200. Its totient is φ = 507249600.

The previous prime is 646262117. The next prime is 646262159. The reversal of 646262125 is 521262646.

646262125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 221325129 + 424936996 = 14877^2 + 20614^2 .

It is not a de Polignac number, because 646262125 - 2³ = 646262117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42150 + ... + 55399.

It is an arithmetic number, because the mean of its divisors is an integer number (51360075).

Almost surely, 2^646262125 is an apocalyptic number.

It is an amenable number.

646262125 is a deficient number, since it is larger than the sum of its proper divisors (175499075).

646262125 is an equidigital number, since it uses as much as digits as its factorization.

646262125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97617 (or 97607 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 646262125 is about 25421.6861163850. The cubic root of 646262125 is about 864.5754540660.

It can be divided in two parts, 6462621 and 25, that added together give a palindrome (6462646).

The spelling of 646262125 in words is "six hundred forty-six million, two hundred sixty-two thousand, one hundred twenty-five".