840164325 has 288 divisors, whose sum is σ = 2031869952. Its totient is φ = 295488000.

The previous prime is 840164317. The next prime is 840164329. The reversal of 840164325 is 523461048.

It is not a de Polignac number, because 840164325 - 2³ = 840164317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840164329) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 27102060 + ... + 27102090.

It is an arithmetic number, because the mean of its divisors is an integer number (7055104).

Almost surely, 2^840164325 is an apocalyptic number.

It is an amenable number.

840164325 is an abundant number, since it is smaller than the sum of its proper divisors (1191705627).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840164325 is a wasteful number, since it uses less digits than its factorization.

840164325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 840164325 is about 28985.5882293253. The cubic root of 840164325 is about 943.6003186440.

The spelling of 840164325 in words is "eight hundred forty million, one hundred sixty-four thousand, three hundred twenty-five".