815050025 has 12 divisors (see below), whose sum is σ = 1012013724. Its totient is φ = 651168000.

The previous prime is 815050009. The next prime is 815050039. The reversal of 815050025 is 520050518.

It can be written as a sum of positive squares in 6 ways, for example, as 64947481 + 750102544 = 8059^2 + 27388^2 .

It is not a de Polignac number, because 815050025 - 2⁴ = 815050009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 815049976 and 815050003.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2396 + ... + 40445.

It is an arithmetic number, because the mean of its divisors is an integer number (84334477).

Almost surely, 2^815050025 is an apocalyptic number.

It is an amenable number.

815050025 is a deficient number, since it is larger than the sum of its proper divisors (196963699).

815050025 is a wasteful number, since it uses less digits than its factorization.

815050025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43612 (or 43607 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 815050025 is about 28549.0809834572. The cubic root of 815050025 is about 934.1029745070.

The spelling of 815050025 in words is "eight hundred fifteen million, fifty thousand, twenty-five".