8349725 has 6 divisors (see below), whose sum is σ = 10353690. Its totient is φ = 6679760.

The previous prime is 8349707. The next prime is 8349743. The reversal of 8349725 is 5279438.

It is an interprime number because it is at equal distance from previous prime (8349707) and next prime (8349743).

It can be written as a sum of positive squares in 3 ways, for example, as 2229049 + 6120676 = 1493^2 + 2474^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8349725 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166970 + ... + 167019.

It is an arithmetic number, because the mean of its divisors is an integer number (1725615).

Almost surely, 2^8349725 is an apocalyptic number.

It is an amenable number.

8349725 is a deficient number, since it is larger than the sum of its proper divisors (2003965).

8349725 is a wasteful number, since it uses less digits than its factorization.

8349725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333999 (or 333994 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 8349725 is about 2889.5890711310. The cubic root of 8349725 is about 202.8729093601.

The spelling of 8349725 in words is "eight million, three hundred forty-nine thousand, seven hundred twenty-five".