15255414121 has 4 divisors (see below), whose sum is σ = 15255900244. Its totient is φ = 15254928000.

The previous prime is 15255414091. The next prime is 15255414149. The reversal of 15255414121 is 12141455251.

15255414121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12141455251 = 1063 ⋅11421877.

It can be written as a sum of positive squares in 2 ways, for example, as 725763600 + 14529650521 = 26940^2 + 120539^2 .

It is a cyclic number.

It is not a de Polignac number, because 15255414121 - 2¹⁷ = 15255283049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15255414191) 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 3 ways as a sum of consecutive naturals, for example, 192480 + ... + 259921.

It is an arithmetic number, because the mean of its divisors is an integer number (3813975061).

Almost surely, 2^15255414121 is an apocalyptic number.

It is an amenable number.

15255414121 is a deficient number, since it is larger than the sum of its proper divisors (486123).

15255414121 is an equidigital number, since it uses as much as digits as its factorization.

15255414121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486122.

The product of its digits is 8000, while the sum is 31.

Adding to 15255414121 its reverse (12141455251), we get a palindrome (27396869372).

The spelling of 15255414121 in words is "fifteen billion, two hundred fifty-five million, four hundred fourteen thousand, one hundred twenty-one".