8125913 has 4 divisors (see below), whose sum is σ = 8324148. Its totient is φ = 7927680.

The previous prime is 8125883. The next prime is 8125921. The reversal of 8125913 is 3195218.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 683929 + 7441984 = 827^2 + 2728^2 .

It is a cyclic number.

It is not a de Polignac number, because 8125913 - 2¹⁴ = 8109529 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8125933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99056 + ... + 99137.

It is an arithmetic number, because the mean of its divisors is an integer number (2081037).

Almost surely, 2^8125913 is an apocalyptic number.

It is an amenable number.

8125913 is a deficient number, since it is larger than the sum of its proper divisors (198235).

8125913 is a wasteful number, since it uses less digits than its factorization.

8125913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198234.

The product of its digits is 2160, while the sum is 29.

The square root of 8125913 is about 2850.5987090434. The cubic root of 8125913 is about 201.0438177451.

The spelling of 8125913 in words is "eight million, one hundred twenty-five thousand, nine hundred thirteen".