425817680 has 20 divisors (see below), whose sum is σ = 990026292. Its totient is φ = 170327040.

The previous prime is 425817673. The next prime is 425817737. The reversal of 425817680 is 86718524.

It can be written as a sum of positive squares in 2 ways, for example, as 303317056 + 122500624 = 17416^2 + 11068^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2661281 + ... + 2661440.

Almost surely, 2^425817680 is an apocalyptic number.

425817680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425817680 is an abundant number, since it is smaller than the sum of its proper divisors (564208612).

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

425817680 is a wasteful number, since it uses less digits than its factorization.

425817680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322734 (or 5322728 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 425817680 is about 20635.3502514496. The cubic root of 425817680 is about 752.3291621467.

The spelling of 425817680 in words is "four hundred twenty-five million, eight hundred seventeen thousand, six hundred eighty".