123425440000 has 180 divisors, whose sum is σ = 325979125164. Its totient is φ = 46465024000.

The previous prime is 123425439989. The next prime is 123425440001. The reversal of 123425440000 is 44524321.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 74962059264 + 48463380736 = 273792^2 + 220144^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123425440001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2697312 + ... + 2742688.

Almost surely, 2^123425440000 is an apocalyptic number.

123425440000 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 123425440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162989562582).

123425440000 is an abundant number, since it is smaller than the sum of its proper divisors (202553685164).

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

123425440000 is an frugal number, since it uses more digits than its factorization.

123425440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45430 (or 45401 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 123425440000 its reverse (44524321), we get a palindrome (123469964321).

The spelling of 123425440000 in words is "one hundred twenty-three billion, four hundred twenty-five million, four hundred forty thousand".