2140625 has 14 divisors (see below), whose sum is σ = 2695278. Its totient is φ = 1700000.

The previous prime is 2140609. The next prime is 2140627. The reversal of 2140625 is 5260412.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 2140369 + 256 = 1463^2 + 16^2 .

It is not a de Polignac number, because 2140625 - 2⁴ = 2140609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140597 and 2140606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140627) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15557 + ... + 15693.

2^2140625 is an apocalyptic number.

2140625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2140625 is a deficient number, since it is larger than the sum of its proper divisors (554653).

2140625 is an frugal number, since it uses more digits than its factorization.

2140625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 142 counting only the distinct ones).

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

The square root of 2140625 is about 1463.0874888400. The cubic root of 2140625 is about 128.8784183869.

The spelling of 2140625 in words is "two million, one hundred forty thousand, six hundred twenty-five".