155242125135 has 48 divisors (see below), whose sum is σ = 283456049760. Its totient is φ = 78380732160.

The previous prime is 155242125091. The next prime is 155242125139. The reversal of 155242125135 is 531521242551.

155242125135 is a `hidden beast` number, since 1 + 5 + 524 + 2 + 125 + 1 + 3 + 5 = 666.

155242125135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155242125135 - 2¹³ = 155242116943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155242125135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155242125139) 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 47 ways as a sum of consecutive naturals, for example, 1115017 + ... + 1246493.

It is an arithmetic number, because the mean of its divisors is an integer number (5905334370).

Almost surely, 2^155242125135 is an apocalyptic number.

155242125135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155242125135 is a deficient number, since it is larger than the sum of its proper divisors (128213924625).

155242125135 is a wasteful number, since it uses less digits than its factorization.

155242125135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132888 (or 132885 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

Adding to 155242125135 its reverse (531521242551), we get a palindrome (686763367686).

The spelling of 155242125135 in words is "one hundred fifty-five billion, two hundred forty-two million, one hundred twenty-five thousand, one hundred thirty-five".