425109 has 16 divisors (see below), whose sum is σ = 607104. Its totient is φ = 264000.

The previous prime is 425107. The next prime is 425123. The reversal of 425109 is 901524.

It is not a de Polignac number, because 425109 - 2¹ = 425107 is a prime.

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 425109.

It is not an unprimeable number, because it can be changed into a prime (425101) 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 15 ways as a sum of consecutive naturals, for example, 4159 + ... + 4259.

It is an arithmetic number, because the mean of its divisors is an integer number (37944).

2⁴²⁵¹⁰⁹ is an apocalyptic number.

It is an amenable number.

425109 is a deficient number, since it is larger than the sum of its proper divisors (181995).

425109 is a wasteful number, since it uses less digits than its factorization.

425109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 425109 is about 652.0038343446. The cubic root of 425109 is about 75.1911568181.

It can be divided in two parts, 42 and 5109, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 425109 in words is "four hundred twenty-five thousand, one hundred nine".