8137825 has 6 divisors (see below), whose sum is σ = 10090934. Its totient is φ = 6510240.

The previous prime is 8137819. The next prime is 8137853. The reversal of 8137825 is 5287318.

It can be written as a sum of positive squares in 3 ways, for example, as 431649 + 7706176 = 657^2 + 2776^2 .

It is not a de Polignac number, because 8137825 - 2⁷ = 8137697 is a prime.

It is a Duffinian number.

8137825 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 162732 + ... + 162781.

Almost surely, 2^8137825 is an apocalyptic number.

It is an amenable number.

8137825 is a deficient number, since it is larger than the sum of its proper divisors (1953109).

8137825 is a wasteful number, since it uses less digits than its factorization.

8137825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325523 (or 325518 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 8137825 is about 2852.6873295193. The cubic root of 8137825 is about 201.1420083399.

The spelling of 8137825 in words is "eight million, one hundred thirty-seven thousand, eight hundred twenty-five".