1625825 has 6 divisors (see below), whose sum is σ = 2016054. Its totient is φ = 1300640.

The previous prime is 1625821. The next prime is 1625831. The reversal of 1625825 is 5285261.

It can be written as a sum of positive squares in 3 ways, for example, as 398161 + 1227664 = 631^2 + 1108^2 .

It is not a de Polignac number, because 1625825 - 2² = 1625821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625821) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 32492 + ... + 32541.

It is an arithmetic number, because the mean of its divisors is an integer number (336009).

2^1625825 is an apocalyptic number.

It is an amenable number.

1625825 is a deficient number, since it is larger than the sum of its proper divisors (390229).

1625825 is an equidigital number, since it uses as much as digits as its factorization.

1625825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65043 (or 65038 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 1625825 is about 1275.0784289604. The cubic root of 1625825 is about 117.5866269289.

The spelling of 1625825 in words is "one million, six hundred twenty-five thousand, eight hundred twenty-five".