169122225 has 36 divisors (see below), whose sum is σ = 287372976. Its totient is φ = 87716160.

The previous prime is 169122223. The next prime is 169122257. The reversal of 169122225 is 522221961.

It is not a de Polignac number, because 169122225 - 2¹ = 169122223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 169122192 and 169122201.

It is not an unprimeable number, because it can be changed into a prime (169122221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 738411 + ... + 738639.

Almost surely, 2^169122225 is an apocalyptic number.

169122225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

169122225 is a deficient number, since it is larger than the sum of its proper divisors (118250751).

169122225 is an equidigital number, since it uses as much as digits as its factorization.

169122225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 280 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 169122225 is about 13004.7001118826. The cubic root of 169122225 is about 553.0107341607.

The spelling of 169122225 in words is "one hundred sixty-nine million, one hundred twenty-two thousand, two hundred twenty-five".