8125697519 has 4 divisors (see below), whose sum is σ = 8603679744. Its totient is φ = 7647715296.

The previous prime is 8125697509. The next prime is 8125697521. The reversal of 8125697519 is 9157965218.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8125697519 - 2¹² = 8125693423 is a prime.

It is a super-2 number, since 2×8125697519² (a number of 21 digits) 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 (8125697509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238991087 + ... + 238991120.

It is an arithmetic number, because the mean of its divisors is an integer number (2150919936).

Almost surely, 2^8125697519 is an apocalyptic number.

8125697519 is a deficient number, since it is larger than the sum of its proper divisors (477982225).

8125697519 is a wasteful number, since it uses less digits than its factorization.

8125697519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477982224.

The product of its digits is 1360800, while the sum is 53.

The square root of 8125697519 is about 90142.6509428251. The cubic root of 8125697519 is about 2010.4204065224.

The spelling of 8125697519 in words is "eight billion, one hundred twenty-five million, six hundred ninety-seven thousand, five hundred nineteen".