425870 has 16 divisors (see below), whose sum is σ = 787968. Its totient is φ = 165600.

The previous prime is 425869. The next prime is 425879. The reversal of 425870 is 78524.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425870.

It is not an unprimeable number, because it can be changed into a prime (425879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206 + ... + 945.

It is an arithmetic number, because the mean of its divisors is an integer number (49248).

2⁴²⁵⁸⁷⁰ is an apocalyptic number.

425870 is a deficient number, since it is larger than the sum of its proper divisors (362098).

425870 is a wasteful number, since it uses less digits than its factorization.

425870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 425870 is about 652.5871589297. The cubic root of 425870 is about 75.2359973651.

The spelling of 425870 in words is "four hundred twenty-five thousand, eight hundred seventy".