1388425 has 24 divisors (see below), whose sum is σ = 1884800. Its totient is φ = 1010880.

The previous prime is 1388419. The next prime is 1388449. The reversal of 1388425 is 5248831.

It is not a de Polignac number, because 1388425 - 2⁵ = 1388393 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17536 + ... + 17614.

2^1388425 is an apocalyptic number.

It is an amenable number.

1388425 is a deficient number, since it is larger than the sum of its proper divisors (496375).

1388425 is a wasteful number, since it uses less digits than its factorization.

1388425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 140 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 1388425 is about 1178.3144741537. The cubic root of 1388425 is about 111.5597352635.

The spelling of 1388425 in words is "one million, three hundred eighty-eight thousand, four hundred twenty-five".