1945425 has 12 divisors (see below), whose sum is σ = 3216560. Its totient is φ = 1037520.

The previous prime is 1945403. The next prime is 1945439. The reversal of 1945425 is 5245491.

It is not a de Polignac number, because 1945425 - 2⁵ = 1945393 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1945392 and 1945401.

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 11 ways as a sum of consecutive naturals, for example, 12895 + ... + 13044.

2^1945425 is an apocalyptic number.

1945425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1945425 is a deficient number, since it is larger than the sum of its proper divisors (1271135).

1945425 is a wasteful number, since it uses less digits than its factorization.

1945425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25952 (or 25947 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 1945425 is about 1394.7849296576. The cubic root of 1945425 is about 124.8355169910.

The spelling of 1945425 in words is "one million, nine hundred forty-five thousand, four hundred twenty-five".