425552021421240 has 128 divisors (see below), whose sum is σ = 1494621733893120. Its totient is φ = 94896618009600.

The previous prime is 425552021421239. The next prime is 425552021421257. The reversal of 425552021421240 is 42124120255524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6178130796 + ... + 6178199675.

It is an arithmetic number, because the mean of its divisors is an integer number (11676732296040).

Almost surely, 2^{425552021421240} is an apocalyptic number.

425552021421240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425552021421240 is an abundant number, since it is smaller than the sum of its proper divisors (1069069712471880).

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

425552021421240 is a wasteful number, since it uses less digits than its factorization.

425552021421240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12356330533 (or 12356330529 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 39.

Adding to 425552021421240 its reverse (42124120255524), we get a palindrome (467676141676764).

The spelling of 425552021421240 in words is "four hundred twenty-five trillion, five hundred fifty-two billion, twenty-one million, four hundred twenty-one thousand, two hundred forty".