1530425 has 24 divisors (see below), whose sum is σ = 2171736. Its totient is φ = 1059840.

The previous prime is 1530409. The next prime is 1530457. The reversal of 1530425 is 5240351.

1530425 = T₂₂₂ + T₂₂₃ + ... + T₂₇₁.

1530425 = 230² + 231² + ... + 255².

It can be written as a sum of positive squares in 12 ways, for example, as 727609 + 802816 = 853^2 + 896^2 .

It is not a de Polignac number, because 1530425 - 2⁴ = 1530409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1530397 and 1530406.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5387 + ... + 5663.

It is an arithmetic number, because the mean of its divisors is an integer number (90489).

2^1530425 is an apocalyptic number.

It is an amenable number.

1530425 is a deficient number, since it is larger than the sum of its proper divisors (641311).

1530425 is a wasteful number, since it uses less digits than its factorization.

1530425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1530425 is about 1237.1034718244. The cubic root of 1530425 is about 115.2402036648.

Adding to 1530425 its reverse (5240351), we get a palindrome (6770776).

The spelling of 1530425 in words is "one million, five hundred thirty thousand, four hundred twenty-five".