169344595225 has 45 divisors (see below), whose sum is σ = 227953702347. Its totient is φ = 124797684960.

The previous prime is 169344595223. The next prime is 169344595241. The reversal of 169344595225 is 522595443961.

The square root of 169344595225 is 411515.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 166153249161 + 3191346064 = 407619^2 + 56492^2 .

It is not a de Polignac number, because 169344595225 - 2¹ = 169344595223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169344595223) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 347729932 + ... + 347730418.

Almost surely, 2^169344595225 is an apocalyptic number.

169344595225 is the 411515-th square number.

169344595225 is the 205758-th centered octagonal number.

It is an amenable number.

169344595225 is a deficient number, since it is larger than the sum of its proper divisors (58609107122).

169344595225 is an frugal number, since it uses more digits than its factorization.

169344595225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 505 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 55.

The spelling of 169344595225 in words is "one hundred sixty-nine billion, three hundred forty-four million, five hundred ninety-five thousand, two hundred twenty-five".