1540525 has 12 divisors (see below), whose sum is σ = 2183392. Its totient is φ = 1056240.

The previous prime is 1540499. The next prime is 1540541. The reversal of 1540525 is 5250451.

It is not a de Polignac number, because 1540525 - 2¹⁹ = 1016237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1540496 and 1540505.

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, 4227 + ... + 4576.

2^1540525 is an apocalyptic number.

It is an amenable number.

1540525 is a deficient number, since it is larger than the sum of its proper divisors (642867).

1540525 is an equidigital number, since it uses as much as digits as its factorization.

1540525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8820 (or 8815 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1540525 is about 1241.1788751022. The cubic root of 1540525 is about 115.4931562695.

Adding to 1540525 its reverse (5250451), we get a palindrome (6790976).

The spelling of 1540525 in words is "one million, five hundred forty thousand, five hundred twenty-five".