2640125 has 8 divisors (see below), whose sum is σ = 3295032. Its totient is φ = 2112000.

The previous prime is 2640067. The next prime is 2640137. The reversal of 2640125 is 5210462.

It is a happy number.

2640125 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 4 ways, for example, as 22201 + 2617924 = 149^2 + 1618^2 .

It is not a de Polignac number, because 2640125 - 2⁸ = 2639869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2640097 and 2640106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10436 + ... + 10685.

It is an arithmetic number, because the mean of its divisors is an integer number (411879).

2^2640125 is an apocalyptic number.

2640125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2640125 is a deficient number, since it is larger than the sum of its proper divisors (654907).

2640125 is an equidigital number, since it uses as much as digits as its factorization.

2640125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21136 (or 21126 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2640125 is about 1624.8461465628. The cubic root of 2640125 is about 138.2106458863.

Adding to 2640125 its reverse (5210462), we get a palindrome (7850587).

The spelling of 2640125 in words is "two million, six hundred forty thousand, one hundred twenty-five".