1513253525 has 18 divisors (see below), whose sum is σ = 2182792770. Its totient is φ = 1037658720.

The previous prime is 1513253519. The next prime is 1513253551. The reversal of 1513253525 is 5253523151.

It can be written as a sum of positive squares in 3 ways, for example, as 6105841 + 1507147684 = 2471^2 + 38822^2 .

It is not a de Polignac number, because 1513253525 - 2¹² = 1513249429 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1513253491 and 1513253500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 616430 + ... + 618879.

It is an arithmetic number, because the mean of its divisors is an integer number (121266265).

Almost surely, 2^1513253525 is an apocalyptic number.

It is an amenable number.

1513253525 is a deficient number, since it is larger than the sum of its proper divisors (669539245).

1513253525 is a wasteful number, since it uses less digits than its factorization.

1513253525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235333 (or 1235321 counting only the distinct ones).

The product of its digits is 22500, while the sum is 32.

The square root of 1513253525 is about 38900.5594432779. The cubic root of 1513253525 is about 1148.0758055237.

Adding to 1513253525 its reverse (5253523151), we get a palindrome (6766776676).

The spelling of 1513253525 in words is "one billion, five hundred thirteen million, two hundred fifty-three thousand, five hundred twenty-five".