425081 has 4 divisors (see below), whose sum is σ = 429312. Its totient is φ = 420852.

The previous prime is 425071. The next prime is 425083. The reversal of 425081 is 180524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425081 - 2¹⁸ = 162937 is a prime.

It is a super-2 number, since 2×425081² = 361387713122, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425081.

It is not an unprimeable number, because it can be changed into a prime (425083) 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, 1961 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (107328).

2⁴²⁵⁰⁸¹ is an apocalyptic number.

It is an amenable number.

425081 is a deficient number, since it is larger than the sum of its proper divisors (4231).

425081 is a wasteful number, since it uses less digits than its factorization.

425081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 425081 is about 651.9823617246. The cubic root of 425081 is about 75.1895059485.

The spelling of 425081 in words is "four hundred twenty-five thousand, eighty-one".