169056225 has 72 divisors (see below), whose sum is σ = 337504440. Its totient is φ = 80317440.

The previous prime is 169056221. The next prime is 169056229. The reversal of 169056225 is 522650961.

169056225 is a `hidden beast` number, since 1 + 6 + 90 + 562 + 2 + 5 = 666.

169056225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (169056221) and next prime (169056229).

It can be written as a sum of positive squares in 12 ways, for example, as 53450721 + 115605504 = 7311^2 + 10752^2 .

It is not a de Polignac number, because 169056225 - 2² = 169056221 is a prime.

It is a super-2 number, since 2×169056225² = 57160014422501250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 169056225.

It is not an unprimeable number, because it can be changed into a prime (169056221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 83829 + ... + 85821.

Almost surely, 2^169056225 is an apocalyptic number.

169056225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

169056225 is a deficient number, since it is larger than the sum of its proper divisors (168448215).

169056225 is a wasteful number, since it uses less digits than its factorization.

169056225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051 (or 2043 counting only the distinct ones).

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

The square root of 169056225 is about 13002.1623201681. The cubic root of 169056225 is about 552.9387872648.

The spelling of 169056225 in words is "one hundred sixty-nine million, fifty-six thousand, two hundred twenty-five".