425306808 has 128 divisors (see below), whose sum is σ = 1251360000. Its totient is φ = 133612416.

The previous prime is 425306797. The next prime is 425306809. The reversal of 425306808 is 808603524.

425306808 is a `hidden beast` number, since 42 + 530 + 6 + 80 + 8 = 666.

It is a super-2 number, since 2×425306808² = 361771761862297728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425306809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268563 + ... + 270141.

It is an arithmetic number, because the mean of its divisors is an integer number (9776250).

Almost surely, 2^425306808 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 425306808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (625680000).

425306808 is an abundant number, since it is smaller than the sum of its proper divisors (826053192).

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

425306808 is a wasteful number, since it uses less digits than its factorization.

425306808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 425306808 is about 20622.9679726270. The cubic root of 425306808 is about 752.0281744009.

The spelling of 425306808 in words is "four hundred twenty-five million, three hundred six thousand, eight hundred eight".