8125109517 has 64 divisors (see below), whose sum is σ = 13487882240. Its totient is φ = 4245696000.

The previous prime is 8125109507. The next prime is 8125109533. The reversal of 8125109517 is 7159015218.

It is not a de Polignac number, because 8125109517 - 2⁶ = 8125109453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8125109507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7433223 + ... + 7434315.

It is an arithmetic number, because the mean of its divisors is an integer number (210748160).

Almost surely, 2^8125109517 is an apocalyptic number.

It is an amenable number.

8125109517 is a deficient number, since it is larger than the sum of its proper divisors (5362772723).

8125109517 is a wasteful number, since it uses less digits than its factorization.

8125109517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754.

The product of its (nonzero) digits is 25200, while the sum is 39.

The square root of 8125109517 is about 90139.3893755666. The cubic root of 8125109517 is about 2010.3719118247.

The spelling of 8125109517 in words is "eight billion, one hundred twenty-five million, one hundred nine thousand, five hundred seventeen".