425456220 has 144 divisors (see below), whose sum is σ = 1415715840. Its totient is φ = 95147136.

The previous prime is 425456209. The next prime is 425456249. The reversal of 425456220 is 22654524.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 136641 + ... + 139719.

It is an arithmetic number, because the mean of its divisors is an integer number (9831360).

Almost surely, 2^425456220 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 425456220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707857920).

425456220 is an abundant number, since it is smaller than the sum of its proper divisors (990259620).

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

425456220 is a wasteful number, since it uses less digits than its factorization.

425456220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152 (or 3143 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 425456220 is about 20626.5901205216. The cubic root of 425456220 is about 752.1162276025.

The spelling of 425456220 in words is "four hundred twenty-five million, four hundred fifty-six thousand, two hundred twenty".