123855739525 has 12 divisors (see below), whose sum is σ = 175521276832. Its totient is φ = 84929649840.

The previous prime is 123855739523. The next prime is 123855739607. The reversal of 123855739525 is 525937558321.

It is not a de Polignac number, because 123855739525 - 2¹ = 123855739523 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123855739523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353873367 + ... + 353873716.

Almost surely, 2^123855739525 is an apocalyptic number.

It is an amenable number.

123855739525 is a deficient number, since it is larger than the sum of its proper divisors (51665537307).

123855739525 is an equidigital number, since it uses as much as digits as its factorization.

123855739525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707747100 (or 707747095 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 55.

The spelling of 123855739525 in words is "one hundred twenty-three billion, eight hundred fifty-five million, seven hundred thirty-nine thousand, five hundred twenty-five".