163040553225 has 36 divisors (see below), whose sum is σ = 318571364592. Its totient is φ = 79049964000.

The previous prime is 163040553101. The next prime is 163040553251. The reversal of 163040553225 is 522355040361.

163040553225 is a `hidden beast` number, since 1 + 63 + 0 + 40 + 5 + 532 + 25 = 666.

It is not a de Polignac number, because 163040553225 - 2⁹ = 163040552713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163040553225.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32935011 + ... + 32939960.

It is an arithmetic number, because the mean of its divisors is an integer number (8849204572).

Almost surely, 2^163040553225 is an apocalyptic number.

163040553225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163040553225 is a deficient number, since it is larger than the sum of its proper divisors (155530811367).

163040553225 is a wasteful number, since it uses less digits than its factorization.

163040553225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65874998 (or 65874990 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 163040553225 its reverse (522355040361), we get a palindrome (685395593586).

The spelling of 163040553225 in words is "one hundred sixty-three billion, forty million, five hundred fifty-three thousand, two hundred twenty-five".