164434525 has 6 divisors (see below), whose sum is σ = 203898842. Its totient is φ = 131547600.

The previous prime is 164434507. The next prime is 164434561. The reversal of 164434525 is 525434461.

164434525 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 3 ways, for example, as 48958009 + 115476516 = 6997^2 + 10746^2 .

It is not a de Polignac number, because 164434525 - 2⁷ = 164434397 is a prime.

It is a super-3 number, since 3×164434525³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3288666 + ... + 3288715.

Almost surely, 2^164434525 is an apocalyptic number.

It is an amenable number.

164434525 is a deficient number, since it is larger than the sum of its proper divisors (39464317).

164434525 is an equidigital number, since it uses as much as digits as its factorization.

164434525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6577391 (or 6577386 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 164434525 is about 12823.2026030941. The cubic root of 164434525 is about 547.8533682043.

Adding to 164434525 its reverse (525434461), we get a palindrome (689868986).

The spelling of 164434525 in words is "one hundred sixty-four million, four hundred thirty-four thousand, five hundred twenty-five".