169225369 has 2 divisors, whose sum is σ = 169225370. Its totient is φ = 169225368.

The previous prime is 169225367. The next prime is 169225387. The reversal of 169225369 is 963522961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157753600 + 11471769 = 12560^2 + 3387^2 .

It is an emirp because it is prime and its reverse (963522961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169225369 - 2¹ = 169225367 is a prime.

It is a super-2 number, since 2×169225369² = 57274451026372322, which contains 22 as substring.

Together with 169225367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (169225367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84612684 + 84612685.

It is an arithmetic number, because the mean of its divisors is an integer number (84612685).

Almost surely, 2^169225369 is an apocalyptic number.

It is an amenable number.

169225369 is a deficient number, since it is larger than the sum of its proper divisors (1).

169225369 is an equidigital number, since it uses as much as digits as its factorization.

169225369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 169225369 is about 13008.6651505833. The cubic root of 169225369 is about 553.1231344229.

The spelling of 169225369 in words is "one hundred sixty-nine million, two hundred twenty-five thousand, three hundred sixty-nine".