1015530025 has 12 divisors (see below), whose sum is σ = 1289972124. Its totient is φ = 792608000.

The previous prime is 1015529989. The next prime is 1015530059. The reversal of 1015530025 is 5200355101.

It can be written as a sum of positive squares in 6 ways, for example, as 76965529 + 938564496 = 8773^2 + 30636^2 .

It is not a de Polignac number, because 1015530025 - 2⁹ = 1015529513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1015529978 and 1015530005.

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, 494356 + ... + 496405.

It is an arithmetic number, because the mean of its divisors is an integer number (107497677).

Almost surely, 2^1015530025 is an apocalyptic number.

It is an amenable number.

1015530025 is a deficient number, since it is larger than the sum of its proper divisors (274442099).

1015530025 is an equidigital number, since it uses as much as digits as its factorization.

1015530025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990812 (or 990807 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1015530025 is about 31867.3818347225. The cubic root of 1015530025 is about 1005.1501058764.

Adding to 1015530025 its reverse (5200355101), we get a palindrome (6215885126).

The spelling of 1015530025 in words is "one billion, fifteen million, five hundred thirty thousand, twenty-five".