1287525 has 12 divisors (see below), whose sum is σ = 2128832. Its totient is φ = 686640.

The previous prime is 1287511. The next prime is 1287541. The reversal of 1287525 is 5257821.

It is not a de Polignac number, because 1287525 - 2¹⁷ = 1156453 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1287492 and 1287501.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 8509 + ... + 8658.

2^1287525 is an apocalyptic number.

1287525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1287525 is a deficient number, since it is larger than the sum of its proper divisors (841307).

1287525 is a wasteful number, since it uses less digits than its factorization.

1287525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17180 (or 17175 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 1287525 is about 1134.6915880538. The cubic root of 1287525 is about 108.7890598231.

The spelling of 1287525 in words is "one million, two hundred eighty-seven thousand, five hundred twenty-five".