1288725 has 12 divisors (see below), whose sum is σ = 2130816. Its totient is φ = 687280.

The previous prime is 1288711. The next prime is 1288733. The reversal of 1288725 is 5278821.

It is not a de Polignac number, because 1288725 - 2⁴ = 1288709 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8517 + ... + 8666.

It is an arithmetic number, because the mean of its divisors is an integer number (177568).

2^1288725 is an apocalyptic number.

1288725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1288725 is a deficient number, since it is larger than the sum of its proper divisors (842091).

1288725 is a wasteful number, since it uses less digits than its factorization.

1288725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17196 (or 17191 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 1288725 is about 1135.2202429485. The cubic root of 1288725 is about 108.8228472150.

The spelling of 1288725 in words is "one million, two hundred eighty-eight thousand, seven hundred twenty-five".