163992625 has 32 divisors (see below), whose sum is σ = 218293920. Its totient is φ = 122572800.

The previous prime is 163992601. The next prime is 163992671. The reversal of 163992625 is 526299361.

It can be written as a sum of positive squares in 16 ways, for example, as 69689104 + 94303521 = 8348^2 + 9711^2 .

It is not a de Polignac number, because 163992625 - 2⁹ = 163992113 is a prime.

It is a super-4 number, since 4×163992625⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486457 + ... + 486793.

It is an arithmetic number, because the mean of its divisors is an integer number (6821685).

Almost surely, 2^163992625 is an apocalyptic number.

It is an amenable number.

163992625 is a deficient number, since it is larger than the sum of its proper divisors (54301295).

163992625 is a wasteful number, since it uses less digits than its factorization.

163992625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 588 counting only the distinct ones).

The product of its digits is 174960, while the sum is 43.

The square root of 163992625 is about 12805.9605262550. The cubic root of 163992625 is about 547.3621623640.

The spelling of 163992625 in words is "one hundred sixty-three million, nine hundred ninety-two thousand, six hundred twenty-five".