123507128325 has 192 divisors, whose sum is σ = 250941716480. Its totient is φ = 52348032000.

The previous prime is 123507128321. The next prime is 123507128369. The reversal of 123507128325 is 523821705321.

It is not a de Polignac number, because 123507128325 - 2² = 123507128321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123507128321) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 120966315 + ... + 120967335.

Almost surely, 2^123507128325 is an apocalyptic number.

123507128325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123507128325 is an abundant number, since it is smaller than the sum of its proper divisors (127434588155).

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

123507128325 is a wasteful number, since it uses less digits than its factorization.

123507128325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 123507128325 in words is "one hundred twenty-three billion, five hundred seven million, one hundred twenty-eight thousand, three hundred twenty-five".