123252525545 has 16 divisors (see below), whose sum is σ = 148284259200. Its totient is φ = 98347993344.

The previous prime is 123252525533. The next prime is 123252525547. The reversal of 123252525545 is 545525252321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123252525545 - 2²⁴ = 123235748329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123252525547) 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 15 ways as a sum of consecutive naturals, for example, 14282522 + ... + 14291148.

It is an arithmetic number, because the mean of its divisors is an integer number (9267766200).

Almost surely, 2^123252525545 is an apocalyptic number.

It is an amenable number.

123252525545 is a deficient number, since it is larger than the sum of its proper divisors (25031733655).

123252525545 is an equidigital number, since it uses as much as digits as its factorization.

123252525545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15664.

The product of its digits is 600000, while the sum is 41.

Adding to 123252525545 its reverse (545525252321), we get a palindrome (668777777866).

The spelling of 123252525545 in words is "one hundred twenty-three billion, two hundred fifty-two million, five hundred twenty-five thousand, five hundred forty-five".