1288425 has 24 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 668800.

The previous prime is 1288423. The next prime is 1288429. The reversal of 1288425 is 5248821.

It is not a de Polignac number, because 1288425 - 2¹ = 1288423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1288392 and 1288401.

It is not an unprimeable number, because it can be changed into a prime (1288421) by changing a digit.

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, 2866 + ... + 3284.

It is an arithmetic number, because the mean of its divisors is an integer number (91140).

2^1288425 is an apocalyptic number.

1288425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1288425 is a deficient number, since it is larger than the sum of its proper divisors (898935).

1288425 is a wasteful number, since it uses less digits than its factorization.

1288425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 468 counting only the distinct ones).

The product of its digits is 5120, while the sum is 30.

The square root of 1288425 is about 1135.0881023075. The cubic root of 1288425 is about 108.8144023340.

The spelling of 1288425 in words is "one million, two hundred eighty-eight thousand, four hundred twenty-five".