163244725 has 18 divisors (see below), whose sum is σ = 235473954. Its totient is φ = 111938400.

The previous prime is 163244707. The next prime is 163244737. The reversal of 163244725 is 527442361.

It can be written as a sum of positive squares in 3 ways, for example, as 56205009 + 107039716 = 7497^2 + 10346^2 .

It is not a de Polignac number, because 163244725 - 2¹⁷ = 163113653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 65406 + ... + 67855.

Almost surely, 2^163244725 is an apocalyptic number.

It is an amenable number.

163244725 is a deficient number, since it is larger than the sum of its proper divisors (72229229).

163244725 is a wasteful number, since it uses less digits than its factorization.

163244725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133285 (or 133273 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 163244725 is about 12776.7259108114. The cubic root of 163244725 is about 546.5287995499.

The spelling of 163244725 in words is "one hundred sixty-three million, two hundred forty-four thousand, seven hundred twenty-five".