123352440225 has 96 divisors (see below), whose sum is σ = 251057455104. Its totient is φ = 52197868800.

The previous prime is 123352440217. The next prime is 123352440229. The reversal of 123352440225 is 522044253321.

It is not a de Polignac number, because 123352440225 - 2³ = 123352440217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123352440229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 209559 + ... + 539091.

It is an arithmetic number, because the mean of its divisors is an integer number (2615181824).

Almost surely, 2^123352440225 is an apocalyptic number.

123352440225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123352440225 is an abundant number, since it is smaller than the sum of its proper divisors (127705014879).

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

123352440225 is a wasteful number, since it uses less digits than its factorization.

123352440225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329607 (or 329602 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 123352440225 its reverse (522044253321), we get a palindrome (645396693546).

The spelling of 123352440225 in words is "one hundred twenty-three billion, three hundred fifty-two million, four hundred forty thousand, two hundred twenty-five".