825002513 has 4 divisors (see below), whose sum is σ = 825073188. Its totient is φ = 824931840.

The previous prime is 825002509. The next prime is 825002531. The reversal of 825002513 is 315200528.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 661878529 + 163123984 = 25727^2 + 12772^2 .

It is a cyclic number.

It is not a de Polignac number, because 825002513 - 2² = 825002509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825002593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13208 + ... + 42713.

It is an arithmetic number, because the mean of its divisors is an integer number (206268297).

Almost surely, 2^825002513 is an apocalyptic number.

It is an amenable number.

825002513 is a deficient number, since it is larger than the sum of its proper divisors (70675).

825002513 is a wasteful number, since it uses less digits than its factorization.

825002513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70674.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 825002513 is about 28722.8569783718. The cubic root of 825002513 is about 937.8896799711.

The spelling of 825002513 in words is "eight hundred twenty-five million, two thousand, five hundred thirteen".