163279679925 has 48 divisors (see below), whose sum is σ = 270585681408. Its totient is φ = 86879601600.

The previous prime is 163279679879. The next prime is 163279679929. The reversal of 163279679925 is 529976972361.

It is not a de Polignac number, because 163279679925 - 2⁹ = 163279679413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163279679929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108059920 + ... + 108061430.

It is an arithmetic number, because the mean of its divisors is an integer number (5637201696).

Almost surely, 2^163279679925 is an apocalyptic number.

163279679925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163279679925 is a deficient number, since it is larger than the sum of its proper divisors (107306001483).

163279679925 is a wasteful number, since it uses less digits than its factorization.

163279679925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930 (or 3925 counting only the distinct ones).

The product of its digits is 77157360, while the sum is 66.

The spelling of 163279679925 in words is "one hundred sixty-three billion, two hundred seventy-nine million, six hundred seventy-nine thousand, nine hundred twenty-five".