163061225 has 6 divisors (see below), whose sum is σ = 202195950. Its totient is φ = 130448960.

The previous prime is 163061221. The next prime is 163061233. The reversal of 163061225 is 522160361.

It can be written as a sum of positive squares in 3 ways, for example, as 22306729 + 140754496 = 4723^2 + 11864^2 .

It is not a de Polignac number, because 163061225 - 2² = 163061221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163061194 and 163061203.

It is not an unprimeable number, because it can be changed into a prime (163061221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3261200 + ... + 3261249.

It is an arithmetic number, because the mean of its divisors is an integer number (33699325).

Almost surely, 2^163061225 is an apocalyptic number.

It is an amenable number.

163061225 is a deficient number, since it is larger than the sum of its proper divisors (39134725).

163061225 is an equidigital number, since it uses as much as digits as its factorization.

163061225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6522459 (or 6522454 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 163061225 is about 12769.5428657411. The cubic root of 163061225 is about 546.3239422201.

The spelling of 163061225 in words is "one hundred sixty-three million, sixty-one thousand, two hundred twenty-five".