425780 has 24 divisors (see below), whose sum is σ = 911400. Its totient is φ = 167040.

The previous prime is 425779. The next prime is 425783. The reversal of 425780 is 87524.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 417316 = 92^2 + 646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 1394.

It is an arithmetic number, because the mean of its divisors is an integer number (37975).

2⁴²⁵⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

425780 is an abundant number, since it is smaller than the sum of its proper divisors (485620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425780 is a wasteful number, since it uses less digits than its factorization.

425780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 425780 is about 652.5181989799. The cubic root of 425780 is about 75.2306970647.

The spelling of 425780 in words is "four hundred twenty-five thousand, seven hundred eighty".