1530625 has 20 divisors (see below), whose sum is σ = 1999360. Its totient is φ = 1170000.

The previous prime is 1530623. The next prime is 1530631. The reversal of 1530625 is 5260351.

It is a happy number.

It is not a de Polignac number, because 1530625 - 2¹ = 1530623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1530596 and 1530605.

It is not an unprimeable number, because it can be changed into a prime (1530623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19336 + ... + 19414.

It is an arithmetic number, because the mean of its divisors is an integer number (99968).

2^1530625 is an apocalyptic number.

It is an amenable number.

1530625 is a deficient number, since it is larger than the sum of its proper divisors (468735).

1530625 is an frugal number, since it uses more digits than its factorization.

1530625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1530625 is about 1237.1843031659. The cubic root of 1530625 is about 115.2452234113.

Adding to 1530625 its reverse (5260351), we get a palindrome (6790976).

The spelling of 1530625 in words is "one million, five hundred thirty thousand, six hundred twenty-five".