8125857507 has 8 divisors (see below), whose sum is σ = 11208079440. Its totient is φ = 5230436960.

The previous prime is 8125857461. The next prime is 8125857517. The reversal of 8125857507 is 7057585218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8125857507 - 2¹⁸ = 8125595363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8125857517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46700244 + ... + 46700417.

It is an arithmetic number, because the mean of its divisors is an integer number (1401009930).

Almost surely, 2^8125857507 is an apocalyptic number.

8125857507 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

8125857507 is a deficient number, since it is larger than the sum of its proper divisors (3082221933).

8125857507 is a wasteful number, since it uses less digits than its factorization.

8125857507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93400693.

The product of its (nonzero) digits is 784000, while the sum is 48.

The square root of 8125857507 is about 90143.5383541161. The cubic root of 8125857507 is about 2010.4336009191.

The spelling of 8125857507 in words is "eight billion, one hundred twenty-five million, eight hundred fifty-seven thousand, five hundred seven".