1525424513 has 8 divisors (see below), whose sum is σ = 1541854440. Its totient is φ = 1509020800.

The previous prime is 1525424497. The next prime is 1525424521. The reversal of 1525424513 is 3154245251.

It can be written as a sum of positive squares in 4 ways, for example, as 342546064 + 1182878449 = 18508^2 + 34393^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1525424513 - 2⁴ = 1525424497 is a prime.

It is a super-2 number, since 2×1525424513² = 4653839889722574338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1525424513.

It is not an unprimeable number, because it can be changed into a prime (1525424113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124331 + ... + 136047.

It is an arithmetic number, because the mean of its divisors is an integer number (192731805).

Almost surely, 2^1525424513 is an apocalyptic number.

It is an amenable number.

1525424513 is a deficient number, since it is larger than the sum of its proper divisors (16429927).

1525424513 is a wasteful number, since it uses less digits than its factorization.

1525424513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13107.

The product of its digits is 24000, while the sum is 32.

The square root of 1525424513 is about 39056.6833333298. The cubic root of 1525424513 is about 1151.1455536447.

Adding to 1525424513 its reverse (3154245251), we get a palindrome (4679669764).

The spelling of 1525424513 in words is "one billion, five hundred twenty-five million, four hundred twenty-four thousand, five hundred thirteen".