425420660 has 48 divisors (see below), whose sum is σ = 1031568384. Its totient is φ = 144350208.

The previous prime is 425420651. The next prime is 425420669. The reversal of 425420660 is 66024524.

It is an interprime number because it is at equal distance from previous prime (425420651) and next prime (425420669).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425420669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2084 + ... + 29243.

It is an arithmetic number, because the mean of its divisors is an integer number (21491008).

Almost surely, 2^425420660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425420660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515784192).

425420660 is an abundant number, since it is smaller than the sum of its proper divisors (606147724).

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

425420660 is a wasteful number, since it uses less digits than its factorization.

425420660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31440 (or 31438 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 425420660 is about 20625.7281083602. The cubic root of 425420660 is about 752.0952728431.

The spelling of 425420660 in words is "four hundred twenty-five million, four hundred twenty thousand, six hundred sixty".