155525033121 has 16 divisors (see below), whose sum is σ = 218439839040. Its totient is φ = 98154745920.

The previous prime is 155525033089. The next prime is 155525033161. The reversal of 155525033121 is 121330525551.

It is a happy number.

It is not a de Polignac number, because 155525033121 - 2⁵ = 155525033089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155525033161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915370 + ... + 1071891.

It is an arithmetic number, because the mean of its divisors is an integer number (13652489940).

Almost surely, 2^155525033121 is an apocalyptic number.

It is an amenable number.

155525033121 is a deficient number, since it is larger than the sum of its proper divisors (62914805919).

155525033121 is a wasteful number, since it uses less digits than its factorization.

155525033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988656.

The product of its (nonzero) digits is 22500, while the sum is 33.

Adding to 155525033121 its reverse (121330525551), we get a palindrome (276855558672).

The spelling of 155525033121 in words is "one hundred fifty-five billion, five hundred twenty-five million, thirty-three thousand, one hundred twenty-one".