1515530425 has 12 divisors (see below), whose sum is σ = 1898634556. Its totient is φ = 1199923200.

The previous prime is 1515530413. The next prime is 1515530431. The reversal of 1515530425 is 5240355151.

It can be written as a sum of positive squares in 6 ways, for example, as 1075369 + 1514455056 = 1037^2 + 38916^2 .

It is not a de Polignac number, because 1515530425 - 2¹⁹ = 1515006137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310056 + ... + 314905.

Almost surely, 2^1515530425 is an apocalyptic number.

It is an amenable number.

1515530425 is a deficient number, since it is larger than the sum of its proper divisors (383104131).

1515530425 is an equidigital number, since it uses as much as digits as its factorization.

1515530425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625068 (or 625063 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1515530425 is about 38929.8140889473. The cubic root of 1515530425 is about 1148.6513301101.

Adding to 1515530425 its reverse (5240355151), we get a palindrome (6755885576).

The spelling of 1515530425 in words is "one billion, five hundred fifteen million, five hundred thirty thousand, four hundred twenty-five".