1975625 has 20 divisors (see below), whose sum is σ = 2577300. Its totient is φ = 1512000.

The previous prime is 1975619. The next prime is 1975627. The reversal of 1975625 is 5265791.

It can be written as a sum of positive squares in 10 ways, for example, as 1317904 + 657721 = 1148^2 + 811^2 .

It is not a de Polignac number, because 1975625 - 2⁴ = 1975609 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1975627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18071 + ... + 18179.

It is an arithmetic number, because the mean of its divisors is an integer number (128865).

2^1975625 is an apocalyptic number.

It is an amenable number.

1975625 is a deficient number, since it is larger than the sum of its proper divisors (601675).

1975625 is an equidigital number, since it uses as much as digits as its factorization.

1975625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 143 counting only the distinct ones).

The product of its digits is 18900, while the sum is 35.

The square root of 1975625 is about 1405.5692796871. The cubic root of 1975625 is about 125.4781685066.

The spelling of 1975625 in words is "one million, nine hundred seventy-five thousand, six hundred twenty-five".