425526645544 has 192 divisors, whose sum is σ = 1093560048000. Its totient is φ = 152591040000.

The previous prime is 425526645539. The next prime is 425526645547. The reversal of 425526645544 is 445546625524.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 425526645491 and 425526645500.

It is not an unprimeable number, because it can be changed into a prime (425526645547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19552669 + ... + 19574419.

It is an arithmetic number, because the mean of its divisors is an integer number (5695625250).

Almost surely, 2^425526645544 is an apocalyptic number.

425526645544 is a gapful number since it is divisible by the number (44) 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 425526645544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546780024000).

425526645544 is an abundant number, since it is smaller than the sum of its proper divisors (668033402456).

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

425526645544 is a wasteful number, since it uses less digits than its factorization.

425526645544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22144 (or 22133 counting only the distinct ones).

The product of its digits is 23040000, while the sum is 52.

The spelling of 425526645544 in words is "four hundred twenty-five billion, five hundred twenty-six million, six hundred forty-five thousand, five hundred forty-four".