425841680 has 80 divisors (see below), whose sum is σ = 1136980800. Its totient is φ = 146695680.

The previous prime is 425841673. The next prime is 425841683. The reversal of 425841680 is 86148524.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×425841680² = 362682272850444800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (425841683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3986 + ... + 29454.

It is an arithmetic number, because the mean of its divisors is an integer number (14212260).

Almost surely, 2^425841680 is an apocalyptic number.

425841680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425841680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568490400).

425841680 is an abundant number, since it is smaller than the sum of its proper divisors (711139120).

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

425841680 is a wasteful number, since it uses less digits than its factorization.

425841680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25512 (or 25506 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 425841680 is about 20635.9317696100. The cubic root of 425841680 is about 752.3432961776.

The spelling of 425841680 in words is "four hundred twenty-five million, eight hundred forty-one thousand, six hundred eighty".