425541431628 has 108 divisors (see below), whose sum is σ = 1131559642920. Its totient is φ = 138297067200.

The previous prime is 425541431621. The next prime is 425541431629. The reversal of 425541431628 is 826134145524.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

425541431628 is a `hidden beast` number, since 4 + 2 + 5 + 5 + 4 + 14 + 3 + 1 + 628 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is not an unprimeable number, because it can be changed into a prime (425541431621) 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 35 ways as a sum of consecutive naturals, for example, 277949223 + ... + 277950753.

Almost surely, 2^425541431628 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 425541431628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565779821460).

425541431628 is an abundant number, since it is smaller than the sum of its proper divisors (706018211292).

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

425541431628 is an equidigital number, since it uses as much as digits as its factorization.

425541431628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 1577 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 425541431628 in words is "four hundred twenty-five billion, five hundred forty-one million, four hundred thirty-one thousand, six hundred twenty-eight".