163742350554225 has 27 divisors (see below), whose sum is σ = 293281087228363. Its totient is φ = 87329151259440.

The previous prime is 163742350554217. The next prime is 163742350554347. The reversal of 163742350554225 is 522455053247361.

The square root of 163742350554225 is 12796185.

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

163742350554225 is a `hidden beast` number, since 1 + 6 + 3 + 7 + 4 + 23 + 50 + 5 + 542 + 25 = 666.

163742350554225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 58947246199521 + 104795104354704 = 7677711^2 + 10236948^2 .

It is not a de Polignac number, because 163742350554225 - 2³ = 163742350554217 is a prime.

It is a Duffinian number.

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, 191516236 + ... + 192369314.

Almost surely, 2^{163742350554225} is an apocalyptic number.

163742350554225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163742350554225 is the 12796185-th square number.

163742350554225 is the 6398093-rd centered octagonal number.

It is an amenable number.

163742350554225 is a deficient number, since it is larger than the sum of its proper divisors (129538736674138).

163742350554225 is an frugal number, since it uses more digits than its factorization.

163742350554225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706174 (or 853087 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 54.

The spelling of 163742350554225 in words is "one hundred sixty-three trillion, seven hundred forty-two billion, three hundred fifty million, five hundred fifty-four thousand, two hundred twenty-five".