123525109633520 has 80 divisors (see below), whose sum is σ = 338811729328128. Its totient is φ = 40985289826560.

The previous prime is 123525109633451. The next prime is 123525109633567. The reversal of 123525109633520 is 25336901525321.

123525109633520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3557733494 + ... + 3557768213.

Almost surely, 2^{123525109633520} is an apocalyptic number.

123525109633520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123525109633520 is an abundant number, since it is smaller than the sum of its proper divisors (215286619694608).

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

123525109633520 is a wasteful number, since it uses less digits than its factorization.

123525109633520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115501758 (or 7115501752 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 123525109633520 in words is "one hundred twenty-three trillion, five hundred twenty-five billion, one hundred nine million, six hundred thirty-three thousand, five hundred twenty".