425472840 has 192 divisors, whose sum is σ = 1499425200. Its totient is φ = 104011776.

The previous prime is 425472781. The next prime is 425472863. The reversal of 425472840 is 48274524.

It can be written as a sum of positive squares in 8 ways, for example, as 246929796 + 178543044 = 15714^2 + 13362^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 425472795 and 425472804.

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 47 ways as a sum of consecutive naturals, for example, 1071522 + ... + 1071918.

Almost surely, 2^425472840 is an apocalyptic number.

425472840 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 425472840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749712600).

425472840 is an abundant number, since it is smaller than the sum of its proper divisors (1073952360).

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

425472840 is a wasteful number, since it uses less digits than its factorization.

425472840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 425472840 is about 20626.9929946175. The cubic root of 425472840 is about 752.1260210183.

The spelling of 425472840 in words is "four hundred twenty-five million, four hundred seventy-two thousand, eight hundred forty".