425091 has 4 divisors (see below), whose sum is σ = 566792. Its totient is φ = 283392.

The previous prime is 425083. The next prime is 425101. The reversal of 425091 is 190524.

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

It is not a de Polignac number, because 425091 - 2³ = 425083 is a prime.

It is a D-number.

It is a Duffinian number.

425091 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425091.

It is not an unprimeable number, because it can be changed into a prime (425071) 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, 70846 + ... + 70851.

It is an arithmetic number, because the mean of its divisors is an integer number (141698).

2⁴²⁵⁰⁹¹ is an apocalyptic number.

425091 is a deficient number, since it is larger than the sum of its proper divisors (141701).

425091 is a wasteful number, since it uses less digits than its factorization.

425091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141700.

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

The square root of 425091 is about 651.9900305986. The cubic root of 425091 is about 75.1900955531.

The spelling of 425091 in words is "four hundred twenty-five thousand, ninety-one".