11425421055420 has 288 divisors, whose sum is σ = 36303887692800. Its totient is φ = 2905833595392.

The previous prime is 11425421055413. The next prime is 11425421055431. The reversal of 11425421055420 is 2455012452411.

11425421055420 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 5 + 4 + 2 + 105 + 542 + 0 = 666.

It is a super-2 number, since 2×11425421055420² (a number of 27 digits) contains 22 as substring.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73055347 + ... + 73211573.

It is an arithmetic number, because the mean of its divisors is an integer number (126055165600).

Almost surely, 2^{11425421055420} is an apocalyptic number.

11425421055420 is a gapful number since it is divisible by the number (10) 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 11425421055420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18151943846400).

11425421055420 is an abundant number, since it is smaller than the sum of its proper divisors (24878466637380).

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

11425421055420 is a wasteful number, since it uses less digits than its factorization.

11425421055420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156497 (or 156492 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The spelling of 11425421055420 in words is "eleven trillion, four hundred twenty-five billion, four hundred twenty-one million, fifty-five thousand, four hundred twenty".