425239920 has 240 divisors, whose sum is σ = 1646561280. Its totient is φ = 96339456.

The previous prime is 425239907. The next prime is 425239937. The reversal of 425239920 is 29932524.

425239920 is a `hidden beast` number, since 42 + 523 + 9 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

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 47 ways as a sum of consecutive naturals, for example, 700257 + ... + 700863.

It is an arithmetic number, because the mean of its divisors is an integer number (6860672).

Almost surely, 2^425239920 is an apocalyptic number.

425239920 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 425239920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823280640).

425239920 is an abundant number, since it is smaller than the sum of its proper divisors (1221321360).

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

425239920 is a wasteful number, since it uses less digits than its factorization.

425239920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 425239920 is about 20621.3462218159. The cubic root of 425239920 is about 751.9887485113.

The spelling of 425239920 in words is "four hundred twenty-five million, two hundred thirty-nine thousand, nine hundred twenty".