425312028 has 72 divisors (see below), whose sum is σ = 1117116000. Its totient is φ = 136273536.

The previous prime is 425312009. The next prime is 425312059. The reversal of 425312028 is 820213524.

425312028 is a `hidden beast` number, since 425 + 31 + 202 + 8 = 666.

It is a super-2 number, since 2×425312028² = 361780642322945568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 425311992 and 425312010.

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 23 ways as a sum of consecutive naturals, for example, 273798 + ... + 275346.

It is an arithmetic number, because the mean of its divisors is an integer number (15515500).

Almost surely, 2^425312028 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 425312028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558558000).

425312028 is an abundant number, since it is smaller than the sum of its proper divisors (691803972).

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

425312028 is a wasteful number, since it uses less digits than its factorization.

425312028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 425312028 is about 20623.0945301621. The cubic root of 425312028 is about 752.0312510591.

The spelling of 425312028 in words is "four hundred twenty-five million, three hundred twelve thousand, twenty-eight".