8508531725 has 24 divisors (see below), whose sum is σ = 10714939200. Its totient is φ = 6701072000.

The previous prime is 8508531719. The next prime is 8508531767. The reversal of 8508531725 is 5271358058.

It is not a de Polignac number, because 8508531725 - 2¹⁶ = 8508466189 is a prime.

It is a super-2 number, since 2×8508531725² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1347626 + ... + 1353924.

It is an arithmetic number, because the mean of its divisors is an integer number (446455800).

Almost surely, 2^8508531725 is an apocalyptic number.

It is an amenable number.

8508531725 is a deficient number, since it is larger than the sum of its proper divisors (2206407475).

8508531725 is a wasteful number, since it uses less digits than its factorization.

8508531725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7141 (or 7136 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 44.

The square root of 8508531725 is about 92241.7027433904. The cubic root of 8508531725 is about 2041.5101375114.

The spelling of 8508531725 in words is "eight billion, five hundred eight million, five hundred thirty-one thousand, seven hundred twenty-five".