1405025 has 12 divisors (see below), whose sum is σ = 1784112. Its totient is φ = 1097040.

The previous prime is 1405009. The next prime is 1405039. The reversal of 1405025 is 5205041.

It is not a de Polignac number, because 1405025 - 2⁴ = 1405009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1404994 and 1405012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (148676).

2^1405025 is an apocalyptic number.

It is an amenable number.

1405025 is a deficient number, since it is larger than the sum of its proper divisors (379087).

1405025 is a wasteful number, since it uses less digits than its factorization.

1405025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1405025 is about 1185.3375046796. The cubic root of 1405025 is about 112.0025775342.

The spelling of 1405025 in words is "one million, four hundred five thousand, twenty-five".