8175425021 has 8 divisors (see below), whose sum is σ = 8534030424. Its totient is φ = 7824064320.

The previous prime is 8175424981. The next prime is 8175425029. The reversal of 8175425021 is 1205245718.

It can be written as a sum of positive squares in 4 ways, for example, as 23863225 + 8151561796 = 4885^2 + 90286^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8175425021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8175425029) 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, 1808870 + ... + 1813383.

It is an arithmetic number, because the mean of its divisors is an integer number (1066753803).

Almost surely, 2^8175425021 is an apocalyptic number.

It is an amenable number.

8175425021 is a deficient number, since it is larger than the sum of its proper divisors (358605403).

8175425021 is a wasteful number, since it uses less digits than its factorization.

8175425021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622351.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 8175425021 is about 90418.0569410779. The cubic root of 8175425021 is about 2014.5131807961.

The spelling of 8175425021 in words is "eight billion, one hundred seventy-five million, four hundred twenty-five thousand, twenty-one".