425303440 has 40 divisors (see below), whose sum is σ = 990740160. Its totient is φ = 169792896.

The previous prime is 425303393. The next prime is 425303453. The reversal of 425303440 is 44303524.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38901 + ... + 48619.

It is an arithmetic number, because the mean of its divisors is an integer number (24768504).

Almost surely, 2^425303440 is an apocalyptic number.

425303440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425303440 is an abundant number, since it is smaller than the sum of its proper divisors (565436720).

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

425303440 is a wasteful number, since it uses less digits than its factorization.

425303440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10279 (or 10273 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 425303440 is about 20622.8863159355. The cubic root of 425303440 is about 752.0261892946.

Adding to 425303440 its reverse (44303524), we get a palindrome (469606964).

The spelling of 425303440 in words is "four hundred twenty-five million, three hundred three thousand, four hundred forty".