169240825 has 36 divisors (see below), whose sum is σ = 233024148. Its totient is φ = 121804800.

The previous prime is 169240823. The next prime is 169240859. The reversal of 169240825 is 528042961.

169240825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 18 ways, for example, as 160047801 + 9193024 = 12651^2 + 3032^2 .

It is not a de Polignac number, because 169240825 - 2¹ = 169240823 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169240823) 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, 172737 + ... + 173713.

It is an arithmetic number, because the mean of its divisors is an integer number (6472893).

Almost surely, 2^169240825 is an apocalyptic number.

It is an amenable number.

169240825 is a deficient number, since it is larger than the sum of its proper divisors (63783323).

169240825 is a wasteful number, since it uses less digits than its factorization.

169240825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 169240825 is about 13009.2592025834. The cubic root of 169240825 is about 553.1399735272.

The spelling of 169240825 in words is "one hundred sixty-nine million, two hundred forty thousand, eight hundred twenty-five".