163240425 has 36 divisors (see below), whose sum is σ = 294241584. Its totient is φ = 86508000.

The previous prime is 163240423. The next prime is 163240459. The reversal of 163240425 is 524042361.

163240425 is a `hidden beast` number, since 1 + 632 + 4 + 0 + 4 + 25 = 666.

It is not a de Polignac number, because 163240425 - 2¹ = 163240423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163240421) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 34450 + ... + 38900.

Almost surely, 2^163240425 is an apocalyptic number.

163240425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163240425 is a deficient number, since it is larger than the sum of its proper divisors (131001159).

163240425 is a wasteful number, since it uses less digits than its factorization.

163240425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630 (or 4622 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 163240425 is about 12776.5576349813. The cubic root of 163240425 is about 546.5240008355.

Adding to 163240425 its reverse (524042361), we get a palindrome (687282786).

The spelling of 163240425 in words is "one hundred sixty-three million, two hundred forty thousand, four hundred twenty-five".