169489725 has 12 divisors (see below), whose sum is σ = 280223136. Its totient is φ = 90394480.

The previous prime is 169489669. The next prime is 169489729. The reversal of 169489725 is 527984961.

169489725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 169489725 - 2⁷ = 169489597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169489729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1129857 + ... + 1130006.

It is an arithmetic number, because the mean of its divisors is an integer number (23351928).

Almost surely, 2^169489725 is an apocalyptic number.

169489725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

169489725 is a deficient number, since it is larger than the sum of its proper divisors (110733411).

169489725 is a wasteful number, since it uses less digits than its factorization.

169489725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259876 (or 2259871 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 169489725 is about 13018.8219513134. The cubic root of 169489725 is about 553.4110056527.

It can be divided in two parts, 1694 and 89725, that added together give a palindrome (91419).

The spelling of 169489725 in words is "one hundred sixty-nine million, four hundred eighty-nine thousand, seven hundred twenty-five".