1438425 has 24 divisors (see below), whose sum is σ = 2643680. Its totient is φ = 766800.

The previous prime is 1438417. The next prime is 1438447. The reversal of 1438425 is 5248341.

It is not a de Polignac number, because 1438425 - 2³ = 1438417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 23 ways as a sum of consecutive naturals, for example, 391 + ... + 1740.

2^1438425 is an apocalyptic number.

1438425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1438425 is a deficient number, since it is larger than the sum of its proper divisors (1205255).

1438425 is a wasteful number, since it uses less digits than its factorization.

1438425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2139 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1438425 is about 1199.3435704584. The cubic root of 1438425 is about 112.8831381203.

The spelling of 1438425 in words is "one million, four hundred thirty-eight thousand, four hundred twenty-five".