425216440 has 32 divisors (see below), whose sum is σ = 1043714160. Its totient is φ = 154624000.

The previous prime is 425216383. The next prime is 425216471. The reversal of 425216440 is 44612524.

It is a junction number, because it is equal to n+sod(n) for n = 425216399 and 425216408.

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 7 ways as a sum of consecutive naturals, for example, 482761 + ... + 483640.

Almost surely, 2^425216440 is an apocalyptic number.

425216440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425216440 is an abundant number, since it is smaller than the sum of its proper divisors (618497720).

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

425216440 is a wasteful number, since it uses less digits than its factorization.

425216440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966423 (or 966419 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 425216440 is about 20620.7769009802. The cubic root of 425216440 is about 751.9749076809.

Adding to 425216440 its reverse (44612524), we get a palindrome (469828964).

The spelling of 425216440 in words is "four hundred twenty-five million, two hundred sixteen thousand, four hundred forty".