1288825 has 12 divisors (see below), whose sum is σ = 1650688. Its totient is φ = 997200.

The previous prime is 1288823. The next prime is 1288829. The reversal of 1288825 is 5288821.

It is a happy number.

It is not a de Polignac number, because 1288825 - 2¹ = 1288823 is a prime.

It is a super-2 number, since 2×1288825² = 3322139761250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1288823) 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, 57 + ... + 1606.

2^1288825 is an apocalyptic number.

It is an amenable number.

1288825 is a deficient number, since it is larger than the sum of its proper divisors (361863).

1288825 is a wasteful number, since it uses less digits than its factorization.

1288825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1699 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The square root of 1288825 is about 1135.2642864109. The cubic root of 1288825 is about 108.8256618840.

The spelling of 1288825 in words is "one million, two hundred eighty-eight thousand, eight hundred twenty-five".