8125919 has 4 divisors (see below), whose sum is σ = 8161944. Its totient is φ = 8089896.

The previous prime is 8125883. The next prime is 8125921. The reversal of 8125919 is 9195218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9195218 = 2 ⋅4597609.

It is a cyclic number.

It is not a de Polignac number, because 8125919 - 2¹² = 8121823 is a prime.

It is a super-2 number, since 2×8125919² = 132061119189122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8125319) 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, 17672 + ... + 18125.

It is an arithmetic number, because the mean of its divisors is an integer number (2040486).

Almost surely, 2^8125919 is an apocalyptic number.

8125919 is a deficient number, since it is larger than the sum of its proper divisors (36025).

8125919 is a wasteful number, since it uses less digits than its factorization.

8125919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36024.

The product of its digits is 6480, while the sum is 35.

The square root of 8125919 is about 2850.5997614537. The cubic root of 8125919 is about 201.0438672272.

The spelling of 8125919 in words is "eight million, one hundred twenty-five thousand, nine hundred nineteen".