425864 has 8 divisors (see below), whose sum is σ = 798510. Its totient is φ = 212928.

The previous prime is 425861. The next prime is 425869. The reversal of 425864 is 468524.

It can be written as a sum of positive squares in only one way, i.e., 422500 + 3364 = 650^2 + 58^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425864.

It is not an unprimeable number, because it can be changed into a prime (425861) 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 as a sum of consecutive naturals, namely, 26609 + ... + 26624.

2⁴²⁵⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

425864 is a deficient number, since it is larger than the sum of its proper divisors (372646).

425864 is a wasteful number, since it uses less digits than its factorization.

425864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53239 (or 53235 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 425864 is about 652.5825618265. The cubic root of 425864 is about 75.2356440350.

The spelling of 425864 in words is "four hundred twenty-five thousand, eight hundred sixty-four".