163712025 has 27 divisors (see below), whose sum is σ = 293570589. Its totient is φ = 87210720.

The previous prime is 163711997. The next prime is 163712039. The reversal of 163712025 is 520217361.

It is a happy number.

The square root of 163712025 is 12795.

It is a perfect power (a square), and thus also a powerful number.

163712025 is a `hidden beast` number, since 1 + 637 + 1 + 2 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 65464281 + 98247744 = 8091^2 + 9912^2 .

It is not a de Polignac number, because 163712025 - 2⁵ = 163711993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163712025.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 191499 + ... + 192351.

Almost surely, 2^163712025 is an apocalyptic number.

163712025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163712025 is the 12795-th square number.

163712025 is the 6398-th centered octagonal number.

It is an amenable number.

163712025 is a deficient number, since it is larger than the sum of its proper divisors (129858564).

163712025 is an frugal number, since it uses more digits than its factorization.

163712025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The cubic root of 163712025 is about 547.0497956622.

Adding to 163712025 its reverse (520217361), we get a palindrome (683929386).

It can be divided in two parts, 1637120 and 25, that added together give a triangular number (1637145 = T₁₈₀₉).

The spelling of 163712025 in words is "one hundred sixty-three million, seven hundred twelve thousand, twenty-five".