2175165525 has 24 divisors (see below), whose sum is σ = 3872911840. Its totient is φ = 1070850240.

The previous prime is 2175165469. The next prime is 2175165599. The reversal of 2175165525 is 5255615712.

It is not a de Polignac number, because 2175165525 - 2¹⁷ = 2175034453 is a prime.

It is a super-4 number, since 4×2175165525⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1114495 + ... + 1116444.

Almost surely, 2^2175165525 is an apocalyptic number.

2175165525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2175165525 is a deficient number, since it is larger than the sum of its proper divisors (1697746315).

2175165525 is a wasteful number, since it uses less digits than its factorization.

2175165525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230965 (or 2230960 counting only the distinct ones).

The product of its digits is 105000, while the sum is 39.

The square root of 2175165525 is about 46638.6698459551. The cubic root of 2175165525 is about 1295.6790513502.

The spelling of 2175165525 in words is "two billion, one hundred seventy-five million, one hundred sixty-five thousand, five hundred twenty-five".