1765625 has 14 divisors (see below), whose sum is σ = 2226534. Its totient is φ = 1400000.

The previous prime is 1765619. The next prime is 1765627. The reversal of 1765625 is 5265671.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 1547536 + 218089 = 1244^2 + 467^2 .

It is not a de Polignac number, because 1765625 - 2⁴ = 1765609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1765591 and 1765600.

It is not an unprimeable number, because it can be changed into a prime (1765627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15569 + ... + 15681.

2^1765625 is an apocalyptic number.

It is an amenable number.

1765625 is a deficient number, since it is larger than the sum of its proper divisors (460909).

1765625 is an frugal number, since it uses more digits than its factorization.

1765625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 118 counting only the distinct ones).

The product of its digits is 12600, while the sum is 32.

The square root of 1765625 is about 1328.7682265918. The cubic root of 1765625 is about 120.8647031778.

The spelling of 1765625 in words is "one million, seven hundred sixty-five thousand, six hundred twenty-five".