1378425 has 12 divisors (see below), whose sum is σ = 2279120. Its totient is φ = 735120.

The previous prime is 1378397. The next prime is 1378427. The reversal of 1378425 is 5248731.

It is not a de Polignac number, because 1378425 - 2⁹ = 1377913 is a prime.

1378425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1378392 and 1378401.

It is not an unprimeable number, because it can be changed into a prime (1378427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9115 + ... + 9264.

2^1378425 is an apocalyptic number.

1378425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1378425 is a deficient number, since it is larger than the sum of its proper divisors (900695).

1378425 is a wasteful number, since it uses less digits than its factorization.

1378425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18392 (or 18387 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 1378425 is about 1174.0634565474. The cubic root of 1378425 is about 111.2912568439.

The spelling of 1378425 in words is "one million, three hundred seventy-eight thousand, four hundred twenty-five".