169225056 has 288 divisors, whose sum is σ = 647232768. Its totient is φ = 40504320.

The previous prime is 169225037. The next prime is 169225057. The reversal of 169225056 is 650522961.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 169225056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169225057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 287995 + ... + 288581.

It is an arithmetic number, because the mean of its divisors is an integer number (2247336).

Almost surely, 2^169225056 is an apocalyptic number.

169225056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169225056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323616384).

169225056 is an abundant number, since it is smaller than the sum of its proper divisors (478007712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169225056 is a wasteful number, since it uses less digits than its factorization.

169225056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 169225056 is about 13008.6531201351. The cubic root of 169225056 is about 553.1227934031.

The spelling of 169225056 in words is "one hundred sixty-nine million, two hundred twenty-five thousand, fifty-six".