425212164 has 36 divisors (see below), whose sum is σ = 1157523276. Its totient is φ = 130834368.

The previous prime is 425212159. The next prime is 425212169. The reversal of 425212164 is 461212524.

425212164 is a `hidden beast` number, since 425 + 21 + 216 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (425212159) and next prime (425212169).

It can be written as a sum of positive squares in 2 ways, for example, as 189282564 + 235929600 = 13758^2 + 15360^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (425212169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453819 + ... + 454754.

Almost surely, 2^425212164 is an apocalyptic number.

It is an amenable number.

425212164 is an abundant number, since it is smaller than the sum of its proper divisors (732311112).

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

425212164 is a wasteful number, since it uses less digits than its factorization.

425212164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908596 (or 908591 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 425212164 is about 20620.6732188840. The cubic root of 425212164 is about 751.9723870387.

Adding to 425212164 its reverse (461212524), we get a palindrome (886424688).

The spelling of 425212164 in words is "four hundred twenty-five million, two hundred twelve thousand, one hundred sixty-four".