1648025 has 6 divisors (see below), whose sum is σ = 2043582. Its totient is φ = 1318400.

The previous prime is 1648021. The next prime is 1648039. The reversal of 1648025 is 5208461.

It can be written as a sum of positive squares in 3 ways, for example, as 1936 + 1646089 = 44^2 + 1283^2 .

It is not a de Polignac number, because 1648025 - 2² = 1648021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1647985 and 1648003.

It is not an unprimeable number, because it can be changed into a prime (1648021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32936 + ... + 32985.

It is an arithmetic number, because the mean of its divisors is an integer number (340597).

2^1648025 is an apocalyptic number.

It is an amenable number.

1648025 is a deficient number, since it is larger than the sum of its proper divisors (395557).

1648025 is an equidigital number, since it uses as much as digits as its factorization.

1648025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65931 (or 65926 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1648025 is about 1283.7542599735. The cubic root of 1648025 is about 118.1194089531.

The spelling of 1648025 in words is "one million, six hundred forty-eight thousand, twenty-five".