425420344250220 has 384 divisors, whose sum is σ = 1321885221995520. Its totient is φ = 101368125112320.

The previous prime is 425420344250147. The next prime is 425420344250227. The reversal of 425420344250220 is 22052443024524.

It is not an unprimeable number, because it can be changed into a prime (425420344250227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8389750107 + ... + 8389800813.

It is an arithmetic number, because the mean of its divisors is an integer number (3442409432280).

Almost surely, 2^{425420344250220} 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 425420344250220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660942610997760).

425420344250220 is an abundant number, since it is smaller than the sum of its proper divisors (896464877745300).

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

425420344250220 is a wasteful number, since it uses less digits than its factorization.

425420344250220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51665 (or 51663 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 39.

Adding to 425420344250220 its reverse (22052443024524), we get a palindrome (447472787274744).

It can be divided in two parts, 425420 and 344250220, that added together give a triangular number (344675640 = T₂₆₂₅₅).

The spelling of 425420344250220 in words is "four hundred twenty-five trillion, four hundred twenty billion, three hundred forty-four million, two hundred fifty thousand, two hundred twenty".