425961 has 24 divisors (see below), whose sum is σ = 673920. Its totient is φ = 258336.

The previous prime is 425959. The next prime is 425977. The reversal of 425961 is 169524.

It is not a de Polignac number, because 425961 - 2¹ = 425959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8011 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (28080).

2⁴²⁵⁹⁶¹ is an apocalyptic number.

It is an amenable number.

425961 is a deficient number, since it is larger than the sum of its proper divisors (247959).

425961 is a wasteful number, since it uses less digits than its factorization.

425961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 122 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 425961 is about 652.6568776930. The cubic root of 425961 is about 75.2413557986.

Subtracting from 425961 its product of digits (2160), we obtain a square (423801 = 651²).

The spelling of 425961 in words is "four hundred twenty-five thousand, nine hundred sixty-one".