425873664 has 216 divisors, whose sum is σ = 1325836512. Its totient is φ = 130990080.

The previous prime is 425873639. The next prime is 425873711. The reversal of 425873664 is 466378524.

425873664 is a `hidden beast` number, since 4 + 2 + 587 + 3 + 6 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3250879 + ... + 3251009.

It is an arithmetic number, because the mean of its divisors is an integer number (6138132).

Almost surely, 2^425873664 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 425873664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662918256).

425873664 is an abundant number, since it is smaller than the sum of its proper divisors (899962848).

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

425873664 is a wasteful number, since it uses less digits than its factorization.

425873664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 236 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 425873664 is about 20636.7067140084. The cubic root of 425873664 is about 752.3621313040.

The spelling of 425873664 in words is "four hundred twenty-five million, eight hundred seventy-three thousand, six hundred sixty-four".