1906425 has 36 divisors (see below), whose sum is σ = 3522220. Its totient is φ = 984960.

The previous prime is 1906417. The next prime is 1906439. The reversal of 1906425 is 5246091.

1906425 is a `hidden beast` number, since 19 + 0 + 642 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 219024 + 1687401 = 468^2 + 1299^2 .

It is not a de Polignac number, because 1906425 - 2³ = 1906417 is a prime.

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 35 ways as a sum of consecutive naturals, for example, 8211 + ... + 8439.

2^1906425 is an apocalyptic number.

1906425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1906425 is a deficient number, since it is larger than the sum of its proper divisors (1615795).

1906425 is a wasteful number, since it uses less digits than its factorization.

1906425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1906425 is about 1380.7335007162. The cubic root of 1906425 is about 123.9956857673.

The spelling of 1906425 in words is "one million, nine hundred six thousand, four hundred twenty-five".