1275625 has 20 divisors (see below), whose sum is σ = 1727572. Its totient is φ = 936000.

The previous prime is 1275611. The next prime is 1275643. The reversal of 1275625 is 5265721.

It can be written as a sum of positive squares in 10 ways, for example, as 1225449 + 50176 = 1107^2 + 224^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1275625 is a prime.

It is a Duffinian number.

Its product of digits (4200) is a multiple of the sum of its prime divisors (175).

1275625 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1275593 and 1275602.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 8047 + ... + 8203.

2^1275625 is an apocalyptic number.

It is an amenable number.

1275625 is a deficient number, since it is larger than the sum of its proper divisors (451947).

1275625 is an equidigital number, since it uses as much as digits as its factorization.

1275625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 175 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 1275625 is about 1129.4356998077. The cubic root of 1275625 is about 108.4528595290.

The spelling of 1275625 in words is "one million, two hundred seventy-five thousand, six hundred twenty-five".