425255232420 has 144 divisors (see below), whose sum is σ = 1327579868160. Its totient is φ = 110105319168.

The previous prime is 425255232331. The next prime is 425255232421. The reversal of 425255232420 is 24232552524.

425255232420 is a `hidden beast` number, since 4 + 2 + 52 + 552 + 32 + 4 + 20 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (425255232421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3123489 + ... + 3256791.

It is an arithmetic number, because the mean of its divisors is an integer number (9219304640).

Almost surely, 2^425255232420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425255232420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663789934080).

425255232420 is an abundant number, since it is smaller than the sum of its proper divisors (902324635740).

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

425255232420 is a wasteful number, since it uses less digits than its factorization.

425255232420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133834 (or 133829 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 425255232420 its reverse (24232552524), we get a palindrome (449487784944).

The spelling of 425255232420 in words is "four hundred twenty-five billion, two hundred fifty-five million, two hundred thirty-two thousand, four hundred twenty".