425239 has 4 divisors (see below), whose sum is σ = 447640. Its totient is φ = 402840.

The previous prime is 425237. The next prime is 425251. The reversal of 425239 is 932524.

425239 = T₂₀₂ + T₂₀₃ + ... + T₂₂₀.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 425239 - 2¹ = 425237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11172 + ... + 11209.

It is an arithmetic number, because the mean of its divisors is an integer number (111910).

2⁴²⁵²³⁹ is an apocalyptic number.

425239 is a deficient number, since it is larger than the sum of its proper divisors (22401).

425239 is a wasteful number, since it uses less digits than its factorization.

425239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22400.

The product of its digits is 2160, while the sum is 25.

The square root of 425239 is about 652.1035193894. The cubic root of 425239 is about 75.1988206206.

The spelling of 425239 in words is "four hundred twenty-five thousand, two hundred thirty-nine".