164435025 has 48 divisors (see below), whose sum is σ = 287928000. Its totient is φ = 82575360.

The previous prime is 164435021. The next prime is 164435057. The reversal of 164435025 is 520534461.

It is not a de Polignac number, because 164435025 - 2² = 164435021 is a prime.

It is a super-3 number, since 3×164435025³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164434983 and 164435001.

It is not an unprimeable number, because it can be changed into a prime (164435021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366001 + ... + 366449.

It is an arithmetic number, because the mean of its divisors is an integer number (5998500).

Almost surely, 2^164435025 is an apocalyptic number.

164435025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164435025 is a deficient number, since it is larger than the sum of its proper divisors (123492975).

164435025 is a wasteful number, since it uses less digits than its factorization.

164435025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 164435025 is about 12823.2220989890. Note that the first 3 decimals coincide. The cubic root of 164435025 is about 547.8539234941.

Adding to 164435025 its reverse (520534461), we get a palindrome (684969486).

The spelling of 164435025 in words is "one hundred sixty-four million, four hundred thirty-five thousand, twenty-five".