1320525 has 18 divisors (see below), whose sum is σ = 2365610. Its totient is φ = 704160.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320525 is 5250231.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 324 + 1320201 = 18^2 + 1149^2 .

It is not a de Polignac number, because 1320525 - 2¹¹ = 1318477 is a prime.

1320525 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1320498 and 1320507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2710 + ... + 3159.

2^1320525 is an apocalyptic number.

1320525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320525 is a deficient number, since it is larger than the sum of its proper divisors (1045085).

1320525 is a wasteful number, since it uses less digits than its factorization.

1320525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5885 (or 5877 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1320525 is about 1149.1409835177. The cubic root of 1320525 is about 109.7106721687.

Adding to 1320525 its reverse (5250231), we get a palindrome (6570756).

The spelling of 1320525 in words is "one million, three hundred twenty thousand, five hundred twenty-five".